🕷️ Crawler Inspector

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Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 51 (from laksa031)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa051.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://edition.cnn.com/2017/01/17/world/asia/malaysia-airlines-flight-370-timeline\')), getAhrefsUnparsedNoserviceFromURL(\'https://edition.cnn.com/2017/01/17/world/asia/malaysia-airlines-flight-370-timeline\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/edition.cnn.com\/2017\/01\/17\/world\/asia\/malaysia-airlines-flight-370-timeline","crawl_time":1772508249,"first_indexed_time":0,"http_code":200,"src_unparsed":"com,cnn!edition,\/2017\/01\/17\/world\/asia\/malaysia-airlines-flight-370-timeline s443","src_root_hash":"2312100192101524051","history_drop_reason":null,"meta_title":"Timeline of MH370 disappearance | CNN","meta_descriptions":["New details provide a clearer chronology about what may have happened to Malaysia Airlines Flight 370 between its takeoff and its last known spotting."],"attrs_boilerpipe_text":"Video Ad Feedback\nThe search for MH370\n01:11\n• Source:\nCNN\nMalaysia Flight MH370 Search\n15 videos\nVideo Ad Feedback\nInside the tower: Tracking down a missing flight\n02:52\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nSearch for flight MH370 suspended\n02:43\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nSpeculation continues about why MH370 disappeared\n03:13\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nThe search for MH370\n01:11\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nMH370 searchers find uncharted shipwreck\n00:57\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nDrone sub searches for Flight MH370\n01:07\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nNew video key in MH370 search?\n01:01\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nNew report suggests deliberate act in MH370 cockpit\n01:18\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nMH370 debris search continues on Reunion Island\n01:40\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nReport: MH370 searchers looking in wrong zone\n02:00\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nMH370:  Two years later\n02:37\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nFamilies react to possible suicide route for MH370\n02:45\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nWho were the pilots flying Malaysia Airlines Flight 370?\n03:03\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nVideo shows possible MH370 debris found\n03:22\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nChinese MH370 families demand certainty, closure\n02:13\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nInside the tower: Tracking down a missing flight\n02:52\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nSearch for flight MH370 suspended\n02:43\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nSpeculation continues about why MH370 disappeared\n03:13\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nThe search for MH370\n01:11\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nMH370 searchers find uncharted shipwreck\n00:57\nNow playing\n• Source:\nCNN\nVideo Ad Feedback\nDrone sub searches for Flight MH370\n01:07\nNow playing\n• Source:\nCNN\nEditor’s Note:\nAn earlier version of this story initially appeared on CNN.com in 2014.\nCNN\n — \nWhat happened to Malaysia Airlines Flight 370 before it dropped off radar?\nHere’s how experts and officials reconstructed key moments of the flight in the immediate aftermath of its disappearance with 239 people aboard.\nTakeoff\nAd Feedback\nAd Feedback\nAll tracking systems are working as the Boeing 777-200ER takes off from the Malaysian capital of Kuala Lumpur, headed for Beijing.\nACARS sends communication\nOne of the plane’s communication systems sends what turns out to be its last transmission, according to Malaysia Airlines CEO Ahmad Jauhari Yahya.\nAd Feedback\n“It showed nothing unusual. The 1:07 a.m. transmission showed a normal routing all the way to Beijing,” according to a statement from Malaysia’s Ministry of Transport.\nThe Aircraft Communications Addressing and Reporting System is the onboard computer that collects information – a lot of it – about aircraft and pilot performance. It’s akin to computers in automobiles that track oil levels and engine performance.\nAboard aircraft, ACARS computers measure thousands of data points and send the information via satellite to the airline, the engine manufacturer and other authorized parties, according to CNN aviation and airline correspondent Richard Quest.\nThe information is useful for operations, maintenance, scheduling and performance purposes, Quest said.\nVideo Ad Feedback\nThe search for MH370\n01:11\n• Source:\nCNN\nThe search for MH370\n01:11\nVoice check-in\nSomeone in the cockpit makes a voice check-in with air traffic controllers as the plane is apparently leaving Malaysian airspace and entering Vietnamese airspace. Initial investigations indicate it was the co-pilot, Fariq Abdul Hamid, according to Malaysia Airlines officials.\n“All right, good night” were the final words from the cockpit, said\nZulazri Mohd Ahnuar,\na Malaysian civil aviation officer.\nThe phrase “good night” is the radio parlance used by pilots when executing a handover from one airspace to another, Quest said.\n“That is normal. That happens a gazillion times,” Quest said. “‘All right, good night’ is a pleasantry at the end of radio communication.”\nTransponder off\nThe plane’s transponder stops communicating at 1:21 a.m., said Azharuddin Abdul Rahman, director of the Malaysian Department of Civil Aviation.\nA transponder sends electronic messages from the plane: “squawks” to radar systems about the flight number, altitude, speed and heading.\nThis is enormously useful information to air traffic controllers who are looking at scores of blips on their screens, and each blip is a plane emitting identifying information, thanks to the transponder.\nThe search for MH370\n1 of 43\nWith the transponder off, “now the plane is flying blind from the ground’s point of view,” Quest said. “If there is radar there, the radar will see a blip, but they won’t know who it is, where they are going. They will just now know it’s there.”\nThat’s because the transponder isn’t sending identifying information about the plane. Shutting off the transponder is a simple turn of a switch in the cockpit, Quest said.\n“The air traffic controller should notice. I suppose it would cause alarm. … (The information from) a plane that you’re monitoring all of a sudden disappears,” Quest said.\nPlane disappears from Thai military radar\nThai military radar is tracking the plane’s signal, but it disappears at 1:22 a.m., a Royal Thai Air Force spokesman told CNN.\nThai radar picks up unknown aircraft\nThe Thai radar station in southern Surathani province picks up an unknown aircraft flying in a direction opposite to what Flight 370 had been traveling, a Royal Thai Air Force spokesman told CNN.\nPlane appears to change course\nThe plane appears to have changed course in this time frame.  The Malaysian government has not said when or if the plane was reprogrammed to fly off course.\nAgain, according to the Malaysians, the last data from the ACARS at 1:07 a.m. indicated that it “showed normal routing all the way to Beijing.”\nCivilian radar loses contact with plane\nMalaysian air traffic controllers in Subang, outside Kuala Lumpur, lose contact with the plane over the Gulf of Thailand between Malaysia and Vietnam at coordinates 06 55 15 N and 103 34 43 E.\nExpected ACARS transmission doesn’t happen\nThe ACARS was supposed to transmit a half-hour after it last did so. Therefore, it was supposed to transmit at 1:37 a.m. – but it didn’t, Yahya said.\nSo, the ACARS stopped communicating sometime between 1:07 and 1:37 a.m.\nIt’s a significant event: Turning off ACARS takes know-how, Quest said.\nIf the flight were hijacked or a target of terrorism, cutting off ACARS would be a strategic move because the system reports to satellites anything being done to the aircraft, Quest said.\nMilitary radar detection\nThough the Malaysian plane is not transmitting information – by ACARS or transponder – radar on the ground or elsewhere can still detect a plane in the air.\nAccording to a Malaysian Air Force official, military radar tracked the plane as it passed over the small island of Pulau Perak in the Strait of Malacca.\nAt this point, the plane was hundreds of miles off course. In fact, it was on the other side of the Malay Peninsula.\nMilitary radar showed that it flew in a westerly direction back over the Malay Peninsula, Malaysian Prime Minister Najib Razak said. This was the last time any civilian or military radar is known to have tracked the aircraft.\nThe focus now then turned to searching for the missing flight in the southern Indian Ocean. “The southern scenario seems more plausible,” a US official said.\nThe Malaysian military handed over its raw radar data to US and British officials, apparently setting aside concerns about any sensitive military intelligence.\nQuest called this sharing of information a “huge” development in the case.\n“They don’t want anyone to know how good their radar is. They obviously decided that doesn’t matter,” he said.\n“We don’t know much about the Malaysian military and that has been one of the issues,” Quest added. “It appears that Malaysia was providing an interpretation of the analysis – and not the raw data. Now they are handing over the raw data.”\nMalaysia Airlines says it learns plane missing from radar\nMalaysian air traffic controllers told Malaysia Airlines at 2:40 a.m. that Flight 370 was missing from radar, according to the airline.\nMalaysia Airlines preliminary search\nDuring this time, the airline “sourced every communication possible to (Flight 370) to locate its whereabouts before declaring that it had lost contact with the aircraft,” the company told CNN.\n“During this period of uncertainty, Malaysia Airlines needed to establish facts by contacting other air traffic controllers and aircraft flying within the same route,” the company said.\nMalaysia Airlines issues alert\nMalaysia Airlines said it issued a “code red” alert that the plane was missing from radar.\nThe airline said “code red” is when it declares that a crisis requires immediate deployment of emergency response plans. It said it took about an hour to issue the alert because it was trying to locate the plane and confirm that it was missing. To verify, it used various measures, including sending messages to the plane and awaiting a response.\nPlane should have arrived in Beijing\nThis was the time that Malaysia Airlines Flight 370 should have landed in China’s capital.\nPublic announcement of disappearance\nMalaysia Airlines announces the plane’s disappearance on Facebook.\nUnable to load video\nPlease try again later.\nError occurred while fetching labs\nVideo Ad Feedback\nThese planes vanished, were never seen again\n02:13\n• Source:\nCNN\nThese planes vanished, were never seen again\n02:13\nSatellite ‘handshakes’\nNajib revealed that a satellite tracked the plane at 8:11 a.m., more than seven hours after takeoff.\nNajib didn’t provide details on the satellite tracking, but it appears that orbiters high above the ocean detected the plane as the satellite or satellites attempted a series of “handshakes” – or electronic connections – with the plane below, Quest said.\nIt’s likely that the plane didn’t complete the handshake because its communication systems were disabled, Quest said.\nNevertheless, the satellites would have been able to trace a plane flying below them and would have extended an electronic message equivalent to a hailing: “There’s a plane: Hello, hello, hello? Do you have anything for us?” Quest said.\nThe Malaysian Prime Minister said the “raw satellite data” confirms the plane was Flight 370. The US National Transportation Safety Board and the Federal Aviation Administration, along with Britain’s Air Accidents Investigation Branch, concur, Najib said.\nRemembering the passengers of MH370\n1 of 12\n“Due to the type of satellite data, we are unable to confirm the precise location of the plane when it last made contact with the satellite,” Najib said.\nAd Feedback\nAd Feedback\nAd Feedback\nAd Feedback\nAd Feedback\nScan the QR code to download the CNN app on Google Play.\nScan the QR code to download the CNN app from the Apple Store.","attrs_markdown":"Thank You\\!\n\nYour effort and contribution in providing this feedback is much appreciated.\n\nClose\n\nAd Feedback\n\n[World](https:\/\/edition.cnn.com\/world)\n\n[Africa](https:\/\/edition.cnn.com\/world\/africa)\n\n[Americas](https:\/\/edition.cnn.com\/world\/americas)\n\n[Asia](https:\/\/edition.cnn.com\/world\/asia)\n\n[Australia](https:\/\/edition.cnn.com\/world\/australia)\n\n[China](https:\/\/edition.cnn.com\/world\/china)\n\n[Europe](https:\/\/edition.cnn.com\/world\/europe)\n\n[India](https:\/\/edition.cnn.com\/world\/india)\n\n[Middle East](https:\/\/edition.cnn.com\/world\/middle-east)\n\n[United Kingdom](https:\/\/edition.cnn.com\/world\/united-kingdom)\n\n[More]()\n\n[Africa](https:\/\/edition.cnn.com\/world\/africa)   [Americas](https:\/\/edition.cnn.com\/world\/americas)   [Asia](https:\/\/edition.cnn.com\/world\/asia)   [Australia](https:\/\/edition.cnn.com\/world\/australia)   [China](https:\/\/edition.cnn.com\/world\/china)   [Europe](https:\/\/edition.cnn.com\/world\/europe)   [India](https:\/\/edition.cnn.com\/world\/india)   [Middle East](https:\/\/edition.cnn.com\/world\/middle-east)   [United Kingdom](https:\/\/edition.cnn.com\/world\/united-kingdom)\n\n[Watch](https:\/\/edition.cnn.com\/watch)   [Listen](https:\/\/edition.cnn.com\/audio)   [Live TV](https:\/\/edition.cnn.com\/live-tv)\n\nSubscribe\n\nSign in\n\nMy Account\n\n- [Settings](https:\/\/edition.cnn.com\/account\/settings)\n- [Newsletters](https:\/\/edition.cnn.com\/newsletters)\n- [Topics you follow](https:\/\/edition.cnn.com\/follow?iid=fw_var-nav)\n- [Sign out](https:\/\/edition.cnn.com\/2017\/01\/17\/world\/asia\/malaysia-airlines-flight-370-timeline)\n\nYour CNN account Sign in to your CNN account\n***\nSign in\n\nMy Account\n\n- [Settings](https:\/\/edition.cnn.com\/account\/settings)\n- [Newsletters](https:\/\/edition.cnn.com\/newsletters)\n- [Topics you follow](https:\/\/edition.cnn.com\/follow?iid=fw_var-nav)\n- [Sign out](https:\/\/edition.cnn.com\/2017\/01\/17\/world\/asia\/malaysia-airlines-flight-370-timeline)\n\nYour CNN account Sign in to your CNN account\n***\n[Live TV](https:\/\/edition.cnn.com\/live-tv)   [Listen](https:\/\/edition.cnn.com\/audio)   [Watch](https:\/\/edition.cnn.com\/watch)\n***\nEdition\n\n[US](https:\/\/us.cnn.com\/?hpt=header_edition-picker)\n\n[International](https:\/\/edition.cnn.com\/?hpt=header_edition-picker)\n\n[Arabic](https:\/\/arabic.cnn.com\/?hpt=header_edition-picker)\n\n[Español](https:\/\/cnnespanol.cnn.com\/?hpt=header_edition-picker)\n\nEdition\n\n- [US](https:\/\/us.cnn.com\/?hpt=header_edition-picker)\n- [International](https:\/\/edition.cnn.com\/?hpt=header_edition-picker)\n- [Arabic](https:\/\/arabic.cnn.com\/?hpt=header_edition-picker)\n- [Español](https:\/\/cnnespanol.cnn.com\/?hpt=header_edition-picker)\n***\n[Africa](https:\/\/edition.cnn.com\/world\/africa)\n\n[Americas](https:\/\/edition.cnn.com\/world\/americas)\n\n[Asia](https:\/\/edition.cnn.com\/world\/asia)\n\n[Australia](https:\/\/edition.cnn.com\/world\/australia)\n\n[China](https:\/\/edition.cnn.com\/world\/china)\n\n[Europe](https:\/\/edition.cnn.com\/world\/europe)\n\n[India](https:\/\/edition.cnn.com\/world\/india)\n\n[Middle East](https:\/\/edition.cnn.com\/world\/middle-east)\n\n[United Kingdom](https:\/\/edition.cnn.com\/world\/united-kingdom)\n***\nFollow CNN\n\nDownload the CNN App\n***\n\n- [World](https:\/\/edition.cnn.com\/world)\n  - 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Under the name Operation SOUTHERN INDIAN OCEAN, ADF assets from the Royal Australian Navy and Royal Australian Air Force have joined the search for debris, recovery and investigation of the missing flight.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nSearch for flight MH370 suspended\n\n02:43\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![mh370 pilot simulation rivers lok\\_00005511.jpg](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nSpeculation continues about why MH370 disappeared\n\n03:13\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![MH370 disappearance search mobile orig\\_00010530.jpg](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nThe search for MH370\n\n01:11\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![Searchers looking for MH370 take an image of a new shipwreck discovered in the course of the search.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nMH370 searchers find uncharted shipwreck\n\n00:57\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![In this handout image provided by the U.S. Navy, The Bluefin 21, Artemis autonomous underwater vehicle (AUV) is hoisted back on board the Australian Defence Vessel Ocean Shield after successful buoyancy testing April 1, 2014 in the Indian Ocean. Joint Task Force 658 is currently supporting Operation Southern Indian Ocean, searching for the missing Malaysia Airlines flight MH370. The airliner disappeared on March 8 with 239 passengers and crew on board and is suspected to have crashed into the southern Indian Ocean. (Photo by Mass Communication Specialist 1st Class Peter D. Blair\/U.S. Navy via Getty ](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nDrone sub searches for Flight MH370\n\n01:07\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![mh370 new search area video ocean floor](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nNew video key in MH370 search?\n\n01:01\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![File photo: The missing Malaysia Airlines 777 airliner, photographed in Australia in 2010.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nNew report suggests deliberate act in MH370 cockpit\n\n01:18\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![mh370 cleaning for clues reunion mclaughlin pkg\\_00000306.jpg](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nMH370 debris search continues on Reunion Island\n\n01:40\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![Able Seaman Marine Technician Trent Goodman keeps lookout onboard HMAS SUCCESS whilst the ship is deployed in search of the missing Malaysia Airlines Flight MH370. \\*\\*\\* Local Caption \\*\\*\\* Joint Task Force 658 has been established by the ADF to coordinate supporting military forces engaged in the search for missing Malaysia Airlines flight MH370. Under the name Operation SOUTHERN INDIAN OCEAN, ADF assets from the Royal Australian Navy and Royal Australian Air Force have joined the search for debris, recovery and investigation of the missing flight.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nReport: MH370 searchers looking in wrong zone\n\n02:00\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![mh370 two years later quest pkg\\_00001028.jpg](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nMH370: Two years later\n\n02:37\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![mh370 families react to pilot simulation route andrew stevens pkg\\_00001404.jpg](https:\/\/media.cnn.com\/api\/v1\/images\/stellar\/prod\/160725024104-mh370-families-react-to-pilot-simulation-route-andrew-stevens-pkg-00001404.jpg?q=x_0,y_117,h_794,w_1412,c_crop\/w_250)\n\nVideo Ad Feedback\n\nFamilies react to possible suicide route for MH370\n\n02:45\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![The pilots of Malaysia Airlines Flight 370 are Forst Officer Gambar Fariq Abdul Hamid, left, and Captain Zaharie Ahmad Shah at right.](https:\/\/media.cnn.com\/api\/v1\/images\/stellar\/prod\/140315205531-01-mh370-pilots-split-0315.jpg?q=h_552,w_980,x_0,y_0,c_crop\/h_619,w_1100,c_lpad,b_rgb:061015\/w_250)\n\nVideo Ad Feedback\n\nWho were the pilots flying Malaysia Airlines Flight 370?\n\n03:03\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![A Mozambican official told CNN the plane part, measuring 35 inches by 22 inches, was discovered by an American tourist, Blaine Gibson, and a local fisherman on a sandbank in Mozambique.](https:\/\/media.cnn.com\/api\/v1\/images\/stellar\/prod\/160302161500-03-mh370-mozambique.jpg?q=x_252,y_259,h_827,w_1471,c_crop\/w_250)\n\nVideo Ad Feedback\n\nVideo shows possible MH370 debris found\n\n03:22\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![BEIJING, CHINA - AUGUST 07: Chinese relatives of passengers missing on Malaysian Airlines flight MH370 cry as they kneel in front of the media outside the Malaysian Embassy during a protest by relatives on August 7, 2015 in Beijing, China. France expanded its search for debris off Reunion Island Friday a day after Malaysia's prime minister announced that a piece of wing discovered last week is from Malaysia Airlines Flight MH 370 which vanished last year. Officials and experts from other countries including the United States and Australia have been more cautious, saying that more investigating needs to be done. (Photo by Kevin Frayer\/Getty Images)](https:\/\/media.cnn.com\/api\/v1\/images\/stellar\/prod\/150807155618-china-mh370-relatives.jpg?q=x_4,y_164,h_1940,w_3448,c_crop\/w_250)\n\nVideo Ad Feedback\n\nChinese MH370 families demand certainty, closure\n\n02:13\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![pkg molko inside air traffic control mh370\\_00001803.jpg](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nInside the tower: Tracking down a missing flight\n\n02:52\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![Able Seaman Marine Technician Trent Goodman keeps lookout onboard HMAS SUCCESS whilst the ship is deployed in search of the missing Malaysia Airlines Flight MH370. \\*\\*\\* Local Caption \\*\\*\\* Joint Task Force 658 has been established by the ADF to coordinate supporting military forces engaged in the search for missing Malaysia Airlines flight MH370. Under the name Operation SOUTHERN INDIAN OCEAN, ADF assets from the Royal Australian Navy and Royal Australian Air Force have joined the search for debris, recovery and investigation of the missing flight.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nSearch for flight MH370 suspended\n\n02:43\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![mh370 pilot simulation rivers lok\\_00005511.jpg](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nSpeculation continues about why MH370 disappeared\n\n03:13\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![MH370 disappearance search mobile orig\\_00010530.jpg](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nThe search for MH370\n\n01:11\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![Searchers looking for MH370 take an image of a new shipwreck discovered in the course of the search.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nMH370 searchers find uncharted shipwreck\n\n00:57\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![In this handout image provided by the U.S. Navy, The Bluefin 21, Artemis autonomous underwater vehicle (AUV) is hoisted back on board the Australian Defence Vessel Ocean Shield after successful buoyancy testing April 1, 2014 in the Indian Ocean. Joint Task Force 658 is currently supporting Operation Southern Indian Ocean, searching for the missing Malaysia Airlines flight MH370. The airliner disappeared on March 8 with 239 passengers and crew on board and is suspected to have crashed into the southern Indian Ocean. (Photo by Mass Communication Specialist 1st Class Peter D. Blair\/U.S. Navy via Getty ](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nDrone sub searches for Flight MH370\n\n01:07\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\nSee more videos\n\n**Editor’s Note:** An earlier version of this story initially appeared on CNN.com in 2014.\n\nCNN —\n\nWhat happened to Malaysia Airlines Flight 370 before it dropped off radar?\n\nHere’s how experts and officials reconstructed key moments of the flight in the immediate aftermath of its disappearance with 239 people aboard.\n\n## 12:41 a.m.\n***Takeoff***\n\nAd Feedback\n\nAd Feedback\n\nAll tracking systems are working as the Boeing 777-200ER takes off from the Malaysian capital of Kuala Lumpur, headed for Beijing.\n\n## 1:07 a.m.\n***ACARS sends communication***\n\nOne of the plane’s communication systems sends what turns out to be its last transmission, according to Malaysia Airlines CEO Ahmad Jauhari Yahya.\n\nAd Feedback\n\n“It showed nothing unusual. The 1:07 a.m. transmission showed a normal routing all the way to Beijing,” according to a statement from Malaysia’s Ministry of Transport.\n\nThe Aircraft Communications Addressing and Reporting System is the onboard computer that collects information – a lot of it – about aircraft and pilot performance. It’s akin to computers in automobiles that track oil levels and engine performance.\n\nAboard aircraft, ACARS computers measure thousands of data points and send the information via satellite to the airline, the engine manufacturer and other authorized parties, according to CNN aviation and airline correspondent Richard Quest.\n\nThe information is useful for operations, maintenance, scheduling and performance purposes, Quest said.\n\n![MH370 disappearance search mobile orig\\_00010530.jpg](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nThe search for MH370\n\n01:11   • Source: [CNN](https:\/\/www.cnn.com\/)\n\nThe search for MH370\n\n01:11\n## 1:19 a.m.\n***Voice check-in***\n\n![MH370 First Officer Fariq Abdul Hamid, left, and Captain Zaharie Ahmad Shah.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nMH370 First Officer Fariq Abdul Hamid, left, and Captain Zaharie Ahmad Shah.\n\nSomeone in the cockpit makes a voice check-in with air traffic controllers as the plane is apparently leaving Malaysian airspace and entering Vietnamese airspace. Initial investigations indicate it was the co-pilot, Fariq Abdul Hamid, according to Malaysia Airlines officials.\n\n“All right, good night” were the final words from the cockpit, said [Zulazri Mohd Ahnuar,](http:\/\/www.cnn.com\/2016\/07\/26\/asia\/mh370-pilot-sister-interview\/) a Malaysian civil aviation officer.\n\nThe phrase “good night” is the radio parlance used by pilots when executing a handover from one airspace to another, Quest said.\n\n“That is normal. That happens a gazillion times,” Quest said. “‘All right, good night’ is a pleasantry at the end of radio communication.”\n\n## 1:21 a.m.\n***Transponder off***\n\nThe plane’s transponder stops communicating at 1:21 a.m., said Azharuddin Abdul Rahman, director of the Malaysian Department of Civil Aviation.\n\nA transponder sends electronic messages from the plane: “squawks” to radar systems about the flight number, altitude, speed and heading.\n\nThis is enormously useful information to air traffic controllers who are looking at scores of blips on their screens, and each blip is a plane emitting identifying information, thanks to the transponder.\n\n![Chinese police at the Beijing airport stand beside the arrival board showing delayed Flight 370 in red on March 8, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nChinese police at the Beijing airport stand beside the arrival board showing delayed Flight 370 in red on March 8, 2014.\n\nMARK RALSTON\/AFP\/Getty Images\n\n![Malaysia Airlines Group CEO Ahmad Juahari Yahya, front, speaks during a news conference at a hotel in Sepang on March 8, 2014. \"We deeply regret that we have lost all contacts\" with the jet, he said.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nMalaysia Airlines Group CEO Ahmad Juahari Yahya, front, speaks during a news conference at a hotel in Sepang on March 8, 2014. \"We deeply regret that we have lost all contacts\" with the jet, he said.\n\nLai Seng Sin\/AP\n\n![Two years after Malaysia Airlines Flight 370 went missing, a relative of one of the passengers burns incense in Beijing on March 8, 2016. Flight 370 vanished on March 8, 2014, as it flew from Kuala Lumpur, Malaysia, to Beijing. There were 239 people on board.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nTwo years after Malaysia Airlines Flight 370 went missing, a relative of one of the passengers burns incense in Beijing on March 8, 2016. Flight 370 vanished on March 8, 2014, as it flew from Kuala Lumpur, Malaysia, to Beijing. There were 239 people on board.\n\nVisual China Group\/Getty Images\n\n![On July 29, police carry a piece of \\<a href=\"http:\/\/www.cnn.com\/2015\/07\/30\/world\/gallery\/debris-found-reunion-island\/index.html\" target=\"\\_blank\"\\>debris on Reunion Island,\\<\/a\\> a French territory in the Indian Ocean. A week later, authorities confirmed that the debris was from the missing flight.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nOn July 29, police carry a piece of [debris on Reunion Island,](http:\/\/www.cnn.com\/2015\/07\/30\/world\/gallery\/debris-found-reunion-island\/index.html) a French territory in the Indian Ocean. A week later, authorities confirmed that the debris was from the missing flight.\n\nLucas Marie\/AP\n\n![Staff members with the Australian Transport Safety Bureau examine a piece of aircraft debris at their laboratory in Canberra, Australia, on July 20. The flap was found in June by residents on Pemba Island off the coast of Tanzania, and officials had said it was highly likely to have come from Flight 370. Experts at the Australian Transport Safety Bureau, which is heading up the search for the plane, confirmed that the part was indeed from the missing aircraft.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nStaff members with the Australian Transport Safety Bureau examine a piece of aircraft debris at their laboratory in Canberra, Australia, on July 20. The flap was found in June by residents on Pemba Island off the coast of Tanzania, and officials had said it was highly likely to have come from Flight 370. Experts at the Australian Transport Safety Bureau, which is heading up the search for the plane, confirmed that the part was indeed from the missing aircraft.\n\nATSB\/AP\n\n![In late February, American tourist Blaine Gibson found a piece of plane debris off Mozambique, a discovery that renewed hope of solving the mystery of the missing flight. The piece measured 35 inches by 22 inches. A U.S. official said it was likely the wreckage came from a Boeing 777, which MH370 was.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nIn late February, American tourist Blaine Gibson found a piece of plane debris off Mozambique, a discovery that renewed hope of solving the mystery of the missing flight. The piece measured 35 inches by 22 inches. A U.S. official said it was likely the wreckage came from a Boeing 777, which MH370 was.\n\nBlaine Gibson\n\n![Relatives of the flight's passengers console each other outside the Malaysia Airlines office in Subang, Malaysia, on February 12, 2015. Protesters had demanded that the airline withdraw the statement that all 239 people aboard the plane were dead.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nRelatives of the flight's passengers console each other outside the Malaysia Airlines office in Subang, Malaysia, on February 12, 2015. Protesters had demanded that the airline withdraw the statement that all 239 people aboard the plane were dead.\n\nMANAN VATSYAYANA\/AFP\/Getty Images\n\n![A police officer watches a couple cry outside the airline's office building in Beijing after officials refused to meet with them on June 11, 2014. The couple's son was on the plane.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nA police officer watches a couple cry outside the airline's office building in Beijing after officials refused to meet with them on June 11, 2014. The couple's son was on the plane.\n\nAndy Wong\/AP\n\n![Members of the media scramble to speak with Azharuddin Abdul Rahman, director general of Malaysia's Civil Aviation Department, at a hotel in Kuala Lumpur, Malaysia, on May 27, 2014. Data from communications between satellites and the missing flight was released the day before, more than two months after relatives of passengers said they requested it be made public.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nMembers of the media scramble to speak with Azharuddin Abdul Rahman, director general of Malaysia's Civil Aviation Department, at a hotel in Kuala Lumpur, Malaysia, on May 27, 2014. Data from communications between satellites and the missing flight was released the day before, more than two months after relatives of passengers said they requested it be made public.\n\nMOHD RASFAN\/AFP\/Getty Images\n\n![Operators aboard the Australian ship Ocean Shield move Bluefin-21, the U.S. Navy's autonomous underwater vehicle, into position to search for the jet on April 14, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nOperators aboard the Australian ship Ocean Shield move Bluefin-21, the U.S. Navy's autonomous underwater vehicle, into position to search for the jet on April 14, 2014.\n\nPeter D. Blair\/U.S. Navy\/UPI\/LANDOV\n\n![A member of the Royal New Zealand Air Force looks out of a window while searching for debris off the coast of western Australia on April 13, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nA member of the Royal New Zealand Air Force looks out of a window while searching for debris off the coast of western Australia on April 13, 2014.\n\nGreg Wood\/Pool\/AP\n\n![The HMS Echo, a vessel with the British Roya; Navy, moves through the waters of the southern Indian Ocean on April 12, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nThe HMS Echo, a vessel with the British Roya; Navy, moves through the waters of the southern Indian Ocean on April 12, 2014.\n\nBritish Ministry of Defence\n\n![A Royal Australian Air Force AP-3C Orion, on a mission to drop sonar buoys to assist in the search, flies past the Australian vessel Ocean Shield on April 9, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nA Royal Australian Air Force AP-3C Orion, on a mission to drop sonar buoys to assist in the search, flies past the Australian vessel Ocean Shield on April 9, 2014.\n\nLSIS Bradley Darvill\/Australian Defense Force\/AP\n\n![A relative of a missing passenger cries at a vigil in Beijing on April 8, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nA relative of a missing passenger cries at a vigil in Beijing on April 8, 2014.\n\nSTRinger\/AFP\/Getty Images\n\n![Australian Defense Force divers scan the water for debris in the southern Indian Ocean on April 7, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nAustralian Defense Force divers scan the water for debris in the southern Indian Ocean on April 7, 2014.\n\nLt. Ryan Davis\/Australian Defense Force\/AP\n\n![A towed pinger locator is readied to be deployed off the deck of the Australian vessel Ocean Shield on April 7, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nA towed pinger locator is readied to be deployed off the deck of the Australian vessel Ocean Shield on April 7, 2014.\n\nKelly Hunt\/Australian Defense Force\/UPI\/LANDOV\n\n![A member of the Royal New Zealand Air Force looks at a flare in the Indian Ocean during search operations on April 4, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nA member of the Royal New Zealand Air Force looks at a flare in the Indian Ocean during search operations on April 4, 2014.\n\nNick Perry\/Pool\/Getty Images\n\n![On March 30, 2014, a woman in Kuala Lumpur prepares for an event in honor of those aboard Flight 370.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nOn March 30, 2014, a woman in Kuala Lumpur prepares for an event in honor of those aboard Flight 370.\n\nRahman Roslan\/Getty Images\n\n![The sole representative for the families of Flight 370 passengers leaves a conference at a Beijing hotel on March 28, 2014, after other relatives left en masse to protest the Malaysian government's response to their questions.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nThe sole representative for the families of Flight 370 passengers leaves a conference at a Beijing hotel on March 28, 2014, after other relatives left en masse to protest the Malaysian government's response to their questions.\n\nNg Han Guan\/AP\n\n![A member of the Royal Australian Air Force is silhouetted against the southern Indian Ocean during the search for the missing jet on March 27, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nA member of the Royal Australian Air Force is silhouetted against the southern Indian Ocean during the search for the missing jet on March 27, 2014.\n\nMichael Martina\/Pool\/Getty Images\n\n![Flight Lt. Jayson Nichols looks at a map aboard a Royal Australian Air Force aircraft during a search on March 27, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nFlight Lt. Jayson Nichols looks at a map aboard a Royal Australian Air Force aircraft during a search on March 27, 2014.\n\nMichael Martina\/Pool\/AP\n\n![People in Kuala Lumpur light candles during a ceremony held for the missing flight's passengers on March 27, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nPeople in Kuala Lumpur light candles during a ceremony held for the missing flight's passengers on March 27, 2014.\n\nAaron Favila\/AP\n\n![Malaysian Prime Minister Najib Razak, center, delivers a statement about the flight on March 24, 2014. Razak's announcement came after the airline sent a text message to relatives saying it \"deeply regrets that we have to assume beyond any reasonable doubt that MH 370 has been lost and that none of those onboard survived.\"](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nMalaysian Prime Minister Najib Razak, center, delivers a statement about the flight on March 24, 2014. Razak's announcement came after the airline sent a text message to relatives saying it \"deeply regrets that we have to assume beyond any reasonable doubt that MH 370 has been lost and that none of those onboard survived.\"\n\nMOHD RASFAN\/AFP\/Getty Images\n\n![Grieving relatives of missing passengers leave a hotel in Beijing on March 24, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nGrieving relatives of missing passengers leave a hotel in Beijing on March 24, 2014.\n\nGOH CHAI HIN\/AFP\/Getty Images\n\n![A passenger views a weather map in the departures terminal of Kuala Lumpur International Airport on March 22, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nA passenger views a weather map in the departures terminal of Kuala Lumpur International Airport on March 22, 2014.\n\nRufus Cox\/Getty Images\n\n![A Chinese satellite captured this image, released on March 22, 2014, of a floating object in the Indian Ocean, according to China's State Administration of Science. It was a possible lead in the search for the missing plane. Surveillance planes were looking for two objects spotted by satellite imagery in remote, treacherous waters more than 1,400 miles from the west coast of Australia.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nA Chinese satellite captured this image, released on March 22, 2014, of a floating object in the Indian Ocean, according to China's State Administration of Science. It was a possible lead in the search for the missing plane. Surveillance planes were looking for two objects spotted by satellite imagery in remote, treacherous waters more than 1,400 miles from the west coast of Australia.\n\nChina's State Admiration of Science\n\n![Satellite imagery provided by the Australian Maritime Safety Authority on March 20, 2014, showed debris in the southern Indian Ocean that could have been from Flight 370. The announcement by Australian officials raised hopes of a breakthrough in the frustrating search.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nSatellite imagery provided by the Australian Maritime Safety Authority on March 20, 2014, showed debris in the southern Indian Ocean that could have been from Flight 370. The announcement by Australian officials raised hopes of a breakthrough in the frustrating search.\n\nDigital Globe\/AMSA\/Getty Images\n\n![Another satellite shot provided by the Australian Maritime Safety Authority shows possible debris from the flight.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nAnother satellite shot provided by the Australian Maritime Safety Authority shows possible debris from the flight.\n\nDigitalGlobe\/AMSA via Getty Images\n\n![A distraught relative of a missing passenger breaks down while talking to reporters at Kuala Lumpur International Airport on March 19, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nA distraught relative of a missing passenger breaks down while talking to reporters at Kuala Lumpur International Airport on March 19, 2014.\n\nAZHAR RAHIM\/EPA\/LANDOV\n\n![On March 18, 2014, a relative of a missing passenger tells reporters in Beijing about a hunger strike to protest authorities' handling of information about the missing jet.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nOn March 18, 2014, a relative of a missing passenger tells reporters in Beijing about a hunger strike to protest authorities' handling of information about the missing jet.\n\nAndy Wong\/AP\n\n![U.S. Navy crew members assist in search-and-rescue operations in the Indian Ocean on March 16, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nU.S. Navy crew members assist in search-and-rescue operations in the Indian Ocean on March 16, 2014.\n\nU.S. Navy\/Eric A. Pastor\/AP\n\n![Members of the Chinese navy continue search operations on March 13, 2014. After starting in the sea between Malaysia and Vietnam, the plane's last confirmed location, search efforts expanded west into the Indian Ocean.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nMembers of the Chinese navy continue search operations on March 13, 2014. After starting in the sea between Malaysia and Vietnam, the plane's last confirmed location, search efforts expanded west into the Indian Ocean.\n\nXINHUA\/LANDOV\n\n![A Vietnamese military official looks out an aircraft window during search operations March 13, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nA Vietnamese military official looks out an aircraft window during search operations March 13, 2014.\n\nLUONG THAI LINH\/EPA\/LANDOV\n\n![Malaysian air force members look for debris near Kuala Lumpur on March 13, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nMalaysian air force members look for debris near Kuala Lumpur on March 13, 2014.\n\nRahman Roslan\/Getty Images\n\n![Relatives of missing passengers wait for the latest news at a hotel in Beijing on March 12, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nRelatives of missing passengers wait for the latest news at a hotel in Beijing on March 12, 2014.\n\nAndy Wong\/AP\n\n![A member of the Vietnamese air force checks a map while searching for the missing plane on March 11, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nA member of the Vietnamese air force checks a map while searching for the missing plane on March 11, 2014.\n\nHOANG DINH NAM\/AFP\/Getty Images\n\n![A Vietnamese air force plane found traces of oil that authorities had suspected to be from the missing Malaysia Airlines plane, the Vietnamese government online newspaper reported on March 8, 2014. However, a sample from the slick showed it was bunker oil, typically used to power large cargo ships, Malaysia's state news agency, Bernama, reported on March 10, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nA Vietnamese air force plane found traces of oil that authorities had suspected to be from the missing Malaysia Airlines plane, the Vietnamese government online newspaper reported on March 8, 2014. However, a sample from the slick showed it was bunker oil, typically used to power large cargo ships, Malaysia's state news agency, Bernama, reported on March 10, 2014.\n\nEPA\/TIENPHONG.VN\n\n![A U.S. Navy Seahawk helicopter lands aboard the USS Pinckney to change crews on March 9, 2014, before returning to search for the missing plane in the Gulf of Thailand.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nA U.S. Navy Seahawk helicopter lands aboard the USS Pinckney to change crews on March 9, 2014, before returning to search for the missing plane in the Gulf of Thailand.\n\nChris D. Boardman\/U.S. Navy via Getty Images\n\n![Buddhist monks at Kuala Lumpur International Airport offer a special prayer for the missing passengers on March 9, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nBuddhist monks at Kuala Lumpur International Airport offer a special prayer for the missing passengers on March 9, 2014.\n\nLai Seng Sin\/AP\n\n![Members of a Chinese emergency response team board a rescue vessel at the port of Sanya in China's Hainan province on March 9, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nMembers of a Chinese emergency response team board a rescue vessel at the port of Sanya in China's Hainan province on March 9, 2014.\n\nZhao Yingquan\/Xinhua\/Landov\n\n![The rescue vessel sets out from Sanya in the South China Sea on March 9, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nThe rescue vessel sets out from Sanya in the South China Sea on March 9, 2014.\n\nZhao Yingquan\/Xinhua\/Landov\n\n![Malaysian Prime Minister Najib Razak, center, arrives to meet family members of missing passengers at the reception center at Kuala Lumpur International Airport on March 8, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nMalaysian Prime Minister Najib Razak, center, arrives to meet family members of missing passengers at the reception center at Kuala Lumpur International Airport on March 8, 2014.\n\nMANAN VATSYAYANA\/AFP\/Getty Images\n\n![A relative of two missing passengers reacts at their home in Kuala Lumpur on March 8, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nA relative of two missing passengers reacts at their home in Kuala Lumpur on March 8, 2014.\n\nMOHD RASFAN\/AFP\/Getty Images\n\n![Chinese police at the Beijing airport stand beside the arrival board showing delayed Flight 370 in red on March 8, 2014.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nChinese police at the Beijing airport stand beside the arrival board showing delayed Flight 370 in red on March 8, 2014.\n\nMARK RALSTON\/AFP\/Getty Images\n\n![Malaysia Airlines Group CEO Ahmad Juahari Yahya, front, speaks during a news conference at a hotel in Sepang on March 8, 2014. \"We deeply regret that we have lost all contacts\" with the jet, he said.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nMalaysia Airlines Group CEO Ahmad Juahari Yahya, front, speaks during a news conference at a hotel in Sepang on March 8, 2014. \"We deeply regret that we have lost all contacts\" with the jet, he said.\n\nLai Seng Sin\/AP\n\n![Two years after Malaysia Airlines Flight 370 went missing, a relative of one of the passengers burns incense in Beijing on March 8, 2016. Flight 370 vanished on March 8, 2014, as it flew from Kuala Lumpur, Malaysia, to Beijing. There were 239 people on board.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nTwo years after Malaysia Airlines Flight 370 went missing, a relative of one of the passengers burns incense in Beijing on March 8, 2016. Flight 370 vanished on March 8, 2014, as it flew from Kuala Lumpur, Malaysia, to Beijing. There were 239 people on board.\n\nVisual China Group\/Getty Images\n\n![On July 29, police carry a piece of \\<a href=\"http:\/\/www.cnn.com\/2015\/07\/30\/world\/gallery\/debris-found-reunion-island\/index.html\" target=\"\\_blank\"\\>debris on Reunion Island,\\<\/a\\> a French territory in the Indian Ocean. A week later, authorities confirmed that the debris was from the missing flight.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nOn July 29, police carry a piece of [debris on Reunion Island,](http:\/\/www.cnn.com\/2015\/07\/30\/world\/gallery\/debris-found-reunion-island\/index.html) a French territory in the Indian Ocean. A week later, authorities confirmed that the debris was from the missing flight.\n\nLucas Marie\/AP\n##### The search for MH370\n1 of 43\n\nPrev\n\nNext\n\nWith the transponder off, “now the plane is flying blind from the ground’s point of view,” Quest said. “If there is radar there, the radar will see a blip, but they won’t know who it is, where they are going. They will just now know it’s there.”\n\nThat’s because the transponder isn’t sending identifying information about the plane. Shutting off the transponder is a simple turn of a switch in the cockpit, Quest said.\n\n“The air traffic controller should notice. I suppose it would cause alarm. … (The information from) a plane that you’re monitoring all of a sudden disappears,” Quest said.\n\n## 1:22 a.m.\n***Plane disappears from Thai military radar***\n\nThai military radar is tracking the plane’s signal, but it disappears at 1:22 a.m., a Royal Thai Air Force spokesman told CNN.\n\n## 1:28 a.m.\n***Thai radar picks up unknown aircraft***\n\nThe Thai radar station in southern Surathani province picks up an unknown aircraft flying in a direction opposite to what Flight 370 had been traveling, a Royal Thai Air Force spokesman told CNN.\n\n## 1:21 a.m. - 1:28 a.m.\n***Plane appears to change course***\n\nThe plane appears to have changed course in this time frame. The Malaysian government has not said when or if the plane was reprogrammed to fly off course.\n\nAgain, according to the Malaysians, the last data from the ACARS at 1:07 a.m. indicated that it “showed normal routing all the way to Beijing.”\n\n![](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\n## About 1:30 a.m.\n***Civilian radar loses contact with plane***\n\nMalaysian air traffic controllers in Subang, outside Kuala Lumpur, lose contact with the plane over the Gulf of Thailand between Malaysia and Vietnam at coordinates 06 55 15 N and 103 34 43 E.\n\n## 1:37 a.m.\n***Expected ACARS transmission doesn’t happen***\n\nThe ACARS was supposed to transmit a half-hour after it last did so. Therefore, it was supposed to transmit at 1:37 a.m. – but it didn’t, Yahya said.\n\nSo, the ACARS stopped communicating sometime between 1:07 and 1:37 a.m.\n\nIt’s a significant event: Turning off ACARS takes know-how, Quest said.\n\nIf the flight were hijacked or a target of terrorism, cutting off ACARS would be a strategic move because the system reports to satellites anything being done to the aircraft, Quest said.\n\n## 2:15 a.m.\n***Military radar detection***\n\nThough the Malaysian plane is not transmitting information – by ACARS or transponder – radar on the ground or elsewhere can still detect a plane in the air.\n\nAccording to a Malaysian Air Force official, military radar tracked the plane as it passed over the small island of Pulau Perak in the Strait of Malacca.\n\nAt this point, the plane was hundreds of miles off course. In fact, it was on the other side of the Malay Peninsula.\n\nMilitary radar showed that it flew in a westerly direction back over the Malay Peninsula, Malaysian Prime Minister Najib Razak said. This was the last time any civilian or military radar is known to have tracked the aircraft.\n\nThe focus now then turned to searching for the missing flight in the southern Indian Ocean. “The southern scenario seems more plausible,” a US official said.\n\n[![mh370 new search area video ocean floor](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg) Geoscience Australia video Related video New video key in MH370 search?](https:\/\/edition.cnn.com\/videos\/world\/2014\/12\/12\/pkg-orig-mh370-new-search-area-video-ocean-floor.cnn)\n\nThe Malaysian military handed over its raw radar data to US and British officials, apparently setting aside concerns about any sensitive military intelligence.\n\nQuest called this sharing of information a “huge” development in the case.\n\n“They don’t want anyone to know how good their radar is. They obviously decided that doesn’t matter,” he said.\n\n“We don’t know much about the Malaysian military and that has been one of the issues,” Quest added. “It appears that Malaysia was providing an interpretation of the analysis – and not the raw data. Now they are handing over the raw data.”\n\n## 2:40 a.m.\n***Malaysia Airlines says it learns plane missing from radar***\n\nMalaysian air traffic controllers told Malaysia Airlines at 2:40 a.m. that Flight 370 was missing from radar, according to the airline.\n\n## 2:40 - 3:45 a.m.\n***Malaysia Airlines preliminary search***\n\nDuring this time, the airline “sourced every communication possible to (Flight 370) to locate its whereabouts before declaring that it had lost contact with the aircraft,” the company told CNN.\n\n“During this period of uncertainty, Malaysia Airlines needed to establish facts by contacting other air traffic controllers and aircraft flying within the same route,” the company said.\n\n## 3:45 a.m.\n***Malaysia Airlines issues alert***\n\nMalaysia Airlines said it issued a “code red” alert that the plane was missing from radar.\n\nThe airline said “code red” is when it declares that a crisis requires immediate deployment of emergency response plans. It said it took about an hour to issue the alert because it was trying to locate the plane and confirm that it was missing. To verify, it used various measures, including sending messages to the plane and awaiting a response.\n\n## 6:30 a.m.\n***Plane should have arrived in Beijing***\n\nThis was the time that Malaysia Airlines Flight 370 should have landed in China’s capital.\n\n## 7:24 a.m.\n***Public announcement of disappearance***\n\nMalaysia Airlines announces the plane’s disappearance on Facebook.\n\n**Unable to load video**\n\nPlease try again later.\n\nError occurred while fetching labs\n\nVideo Ad Feedback\n\nThese planes vanished, were never seen again\n\n02:13   • Source: [CNN](https:\/\/www.cnn.com\/)\n\nThese planes vanished, were never seen again\n\n02:13\n## 8:11 a.m.\n***Satellite ‘handshakes’***\n\nNajib revealed that a satellite tracked the plane at 8:11 a.m., more than seven hours after takeoff.\n\nNajib didn’t provide details on the satellite tracking, but it appears that orbiters high above the ocean detected the plane as the satellite or satellites attempted a series of “handshakes” – or electronic connections – with the plane below, Quest said.\n\nIt’s likely that the plane didn’t complete the handshake because its communication systems were disabled, Quest said.\n\nNevertheless, the satellites would have been able to trace a plane flying below them and would have extended an electronic message equivalent to a hailing: “There’s a plane: Hello, hello, hello? Do you have anything for us?” Quest said.\n\nThe Malaysian Prime Minister said the “raw satellite data” confirms the plane was Flight 370. The US National Transportation Safety Board and the Federal Aviation Administration, along with Britain’s Air Accidents Investigation Branch, concur, Najib said.\n\n![Ch'ng Mei Ling, a Malaysian citizen who lives in Pennsylvania, is a process engineer at a chemical company.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nCh'ng Mei Ling, a Malaysian citizen who lives in Pennsylvania, is a process engineer at a chemical company.\n\nFamily photo\n\n![We do not have photos of all 239 passengers, but we wanted to remember that there are loved ones around the world missing them right now.\\<a href=\"http:\/\/www.cnn.com\/specials\/asia\/mh370\"\\> View CNN's complete coverage of Flight 370.\\<\/a\\>](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nWe do not have photos of all 239 passengers, but we wanted to remember that there are loved ones around the world missing them right now. [View CNN's complete coverage of Flight 370.](http:\/\/www.cnn.com\/specials\/asia\/mh370)\n\n![There is still no way to know for sure why Flight MH370 ended, but we are learning more about the lives of those on board. CNN is remembering them through snapshots shared with us. ](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nThere is still no way to know for sure why Flight MH370 ended, but we are learning more about the lives of those on board. CNN is remembering them through snapshots shared with us.\n\n![Rodney and Mary Burrows were looking forward to becoming first-time grandparents after their return home to Australia.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nRodney and Mary Burrows were looking forward to becoming first-time grandparents after their return home to Australia.\n\nFrom www.sbs.com\n\n![Australians Catherine and Robert Lawton were traveling with friends on vacation when the flight disappeared.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nAustralians Catherine and Robert Lawton were traveling with friends on vacation when the flight disappeared.\n\nFrom www.sbs.com\n\n![Paul Weeks was traveling to Mongolia for a new job as an engineer. His wife says Paul left behind his watch and his wedding ring before the trip, in case anything happened to him while he was away. Anderson spoke with \\<a href=\"http:\/\/cnn.it\/1kN1Yxu\" target=\"\\_blank\" target=\"\\_blank\"\\>Paul's brother & sister\\<\/a\\> who said they are coping by spending time together as a family.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nPaul Weeks was traveling to Mongolia for a new job as an engineer. His wife says Paul left behind his watch and his wedding ring before the trip, in case anything happened to him while he was away. Anderson spoke with [Paul's brother & sister](http:\/\/cnn.it\/1kN1Yxu) who said they are coping by spending time together as a family.\n\nFrom www.sbs.com\n\n![Chandrika Sharma, left, was on Flight 370; her daughter Meghna and husband K.S. Narendran wait patiently, trying to manage their anxiety and longing for her return.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nChandrika Sharma, left, was on Flight 370; her daughter Meghna and husband K.S. Narendran wait patiently, trying to manage their anxiety and longing for her return.\n\nCourtesy K.S. Narendran\n\n![Muktesh Mukherjee and Xiaomo Bai had been vacationing in Vietnam and were on their way home to their two young sons in Beijing.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nMuktesh Mukherjee and Xiaomo Bai had been vacationing in Vietnam and were on their way home to their two young sons in Beijing.\n\nXiaomo Bai\/Muktesh Mukherjee\/Facebook\n\n![76-year-old Liu Rusheng, an accomplished calligrapher and one of the oldest passengers on the flight, was in Malaysia to attend an art exhibition with his wife.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\n76-year-old Liu Rusheng, an accomplished calligrapher and one of the oldest passengers on the flight, was in Malaysia to attend an art exhibition with his wife.\n\nFrom The Star Online\n\n![Teens Hadrien Wattrelos and Zhao Yan are shown in a photo on Wattrelos' Facebook page. The photo is captioned, simply, \"I love you,\" in French. ](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nTeens Hadrien Wattrelos and Zhao Yan are shown in a photo on Wattrelos' Facebook page. The photo is captioned, simply, \"I love you,\" in French.\n\nFrom Facebook\n\n![Firman Chandra Siregar, 24, studied electrical engineering in Indonesia and was on his way to Beijing on board Flight 370 to start a new job at an oil company.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nFirman Chandra Siregar, 24, studied electrical engineering in Indonesia and was on his way to Beijing on board Flight 370 to start a new job at an oil company.\n\nBinsar Bakkara\/AP\n\n![Patrick Francis Gomes, center, was the in-flight supervisor for the missing plane. His daughter describes him as a quiet person with a sense of humor.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nPatrick Francis Gomes, center, was the in-flight supervisor for the missing plane. His daughter describes him as a quiet person with a sense of humor.\n\nFrom the Gomes family\n\n![Ch'ng Mei Ling, a Malaysian citizen who lives in Pennsylvania, is a process engineer at a chemical company.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nCh'ng Mei Ling, a Malaysian citizen who lives in Pennsylvania, is a process engineer at a chemical company.\n\nFamily photo\n\n![We do not have photos of all 239 passengers, but we wanted to remember that there are loved ones around the world missing them right now.\\<a href=\"http:\/\/www.cnn.com\/specials\/asia\/mh370\"\\> View CNN's complete coverage of Flight 370.\\<\/a\\>](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nWe do not have photos of all 239 passengers, but we wanted to remember that there are loved ones around the world missing them right now. [View CNN's complete coverage of Flight 370.](http:\/\/www.cnn.com\/specials\/asia\/mh370)\n\n![There is still no way to know for sure why Flight MH370 ended, but we are learning more about the lives of those on board. CNN is remembering them through snapshots shared with us. ](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nThere is still no way to know for sure why Flight MH370 ended, but we are learning more about the lives of those on board. CNN is remembering them through snapshots shared with us.\n\n![Rodney and Mary Burrows were looking forward to becoming first-time grandparents after their return home to Australia.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nRodney and Mary Burrows were looking forward to becoming first-time grandparents after their return home to Australia.\n\nFrom www.sbs.com\n##### Remembering the passengers of MH370\n1 of 12\n\nPrev\n\nNext\n\n“Due to the type of satellite data, we are unable to confirm the precise location of the plane when it last made contact with the satellite,” Najib said.\n\nAd Feedback\n\nAd Feedback\n\nAd Feedback\n\nAd Feedback\n\nAd Feedback\n\nSubscribe\n\nSign in\n\nMy Account\n\n- [Settings](https:\/\/edition.cnn.com\/account\/settings)\n- [Newsletters](https:\/\/edition.cnn.com\/newsletters)\n- [Topics you follow](https:\/\/edition.cnn.com\/follow?iid=fw_var-nav)\n- [Sign out](https:\/\/edition.cnn.com\/2017\/01\/17\/world\/asia\/malaysia-airlines-flight-370-timeline)\n\nYour CNN account Sign in to your CNN account\n***\n[Live TV](https:\/\/edition.cnn.com\/live-tv)   [Listen](https:\/\/edition.cnn.com\/audio)   [Watch](https:\/\/edition.cnn.com\/watch)\n***\n- [World](https:\/\/edition.cnn.com\/world)\n  - 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Under the name Operation SOUTHERN INDIAN OCEAN, ADF assets from the Royal Australian Navy and Royal Australian Air Force have joined the search for debris, recovery and investigation of the missing flight.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nSearch for flight MH370 suspended\n\n02:43\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![mh370 pilot simulation rivers lok\\_00005511.jpg](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nSpeculation continues about why MH370 disappeared\n\n03:13\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\nVideo Ad Feedback\n\nThe search for MH370\n\n01:11\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![Searchers looking for MH370 take an image of a new shipwreck discovered in the course of the search.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nMH370 searchers find uncharted shipwreck\n\n00:57\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\nVideo Ad Feedback\n\nDrone sub searches for Flight MH370\n\n01:07\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![mh370 new search area video ocean floor](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nNew video key in MH370 search?\n\n01:01\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![File photo: The missing Malaysia Airlines 777 airliner, photographed in Australia in 2010.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nNew report suggests deliberate act in MH370 cockpit\n\n01:18\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\nVideo Ad Feedback\n\nMH370 debris search continues on Reunion Island\n\n01:40\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![Able Seaman Marine Technician Trent Goodman keeps lookout onboard HMAS SUCCESS whilst the ship is deployed in search of the missing Malaysia Airlines Flight MH370. \\*\\*\\* Local Caption \\*\\*\\* Joint Task Force 658 has been established by the ADF to coordinate supporting military forces engaged in the search for missing Malaysia Airlines flight MH370. Under the name Operation SOUTHERN INDIAN OCEAN, ADF assets from the Royal Australian Navy and Royal Australian Air Force have joined the search for debris, recovery and investigation of the missing flight.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nReport: MH370 searchers looking in wrong zone\n\n02:00\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\nVideo Ad Feedback\n\nMH370: Two years later\n\n02:37\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![mh370 families react to pilot simulation route andrew stevens pkg\\_00001404.jpg](https:\/\/media.cnn.com\/api\/v1\/images\/stellar\/prod\/160725024104-mh370-families-react-to-pilot-simulation-route-andrew-stevens-pkg-00001404.jpg?q=x_0,y_117,h_794,w_1412,c_crop\/w_250)\n\nVideo Ad Feedback\n\nFamilies react to possible suicide route for MH370\n\n02:45\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![The pilots of Malaysia Airlines Flight 370 are Forst Officer Gambar Fariq Abdul Hamid, left, and Captain Zaharie Ahmad Shah at right.](https:\/\/media.cnn.com\/api\/v1\/images\/stellar\/prod\/140315205531-01-mh370-pilots-split-0315.jpg?q=h_552,w_980,x_0,y_0,c_crop\/h_619,w_1100,c_lpad,b_rgb:061015\/w_250)\n\nVideo Ad Feedback\n\nWho were the pilots flying Malaysia Airlines Flight 370?\n\n03:03\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![A Mozambican official told CNN the plane part, measuring 35 inches by 22 inches, was discovered by an American tourist, Blaine Gibson, and a local fisherman on a sandbank in Mozambique.](https:\/\/media.cnn.com\/api\/v1\/images\/stellar\/prod\/160302161500-03-mh370-mozambique.jpg?q=x_252,y_259,h_827,w_1471,c_crop\/w_250)\n\nVideo Ad Feedback\n\nVideo shows possible MH370 debris found\n\n03:22\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![BEIJING, CHINA - AUGUST 07: Chinese relatives of passengers missing on Malaysian Airlines flight MH370 cry as they kneel in front of the media outside the Malaysian Embassy during a protest by relatives on August 7, 2015 in Beijing, China. France expanded its search for debris off Reunion Island Friday a day after Malaysia's prime minister announced that a piece of wing discovered last week is from Malaysia Airlines Flight MH 370 which vanished last year. Officials and experts from other countries including the United States and Australia have been more cautious, saying that more investigating needs to be done. (Photo by Kevin Frayer\/Getty Images)](https:\/\/media.cnn.com\/api\/v1\/images\/stellar\/prod\/150807155618-china-mh370-relatives.jpg?q=x_4,y_164,h_1940,w_3448,c_crop\/w_250)\n\nVideo Ad Feedback\n\nChinese MH370 families demand certainty, closure\n\n02:13\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\nVideo Ad Feedback\n\nInside the tower: Tracking down a missing flight\n\n02:52\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![Able Seaman Marine Technician Trent Goodman keeps lookout onboard HMAS SUCCESS whilst the ship is deployed in search of the missing Malaysia Airlines Flight MH370. \\*\\*\\* Local Caption \\*\\*\\* Joint Task Force 658 has been established by the ADF to coordinate supporting military forces engaged in the search for missing Malaysia Airlines flight MH370. Under the name Operation SOUTHERN INDIAN OCEAN, ADF assets from the Royal Australian Navy and Royal Australian Air Force have joined the search for debris, recovery and investigation of the missing flight.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nSearch for flight MH370 suspended\n\n02:43\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\nVideo Ad Feedback\n\nSpeculation continues about why MH370 disappeared\n\n03:13\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![MH370 disappearance search mobile orig\\_00010530.jpg](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nThe search for MH370\n\n01:11\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![Searchers looking for MH370 take an image of a new shipwreck discovered in the course of the search.](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nMH370 searchers find uncharted shipwreck\n\n00:57\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n![In this handout image provided by the U.S. Navy, The Bluefin 21, Artemis autonomous underwater vehicle (AUV) is hoisted back on board the Australian Defence Vessel Ocean Shield after successful buoyancy testing April 1, 2014 in the Indian Ocean. Joint Task Force 658 is currently supporting Operation Southern Indian Ocean, searching for the missing Malaysia Airlines flight MH370. The airliner disappeared on March 8 with 239 passengers and crew on board and is suspected to have crashed into the southern Indian Ocean. (Photo by Mass Communication Specialist 1st Class Peter D. Blair\/U.S. Navy via Getty ](https:\/\/edition.cnn.com\/media\/sites\/cnn\/cnn-fallback-image.jpg)\n\nVideo Ad Feedback\n\nDrone sub searches for Flight MH370\n\n01:07\n\nNow playing\n\n• Source: [CNN](https:\/\/www.cnn.com\/)\n\n**Editor’s Note:** An earlier version of this story initially appeared on CNN.com in 2014.\n\nCNN —\n\nWhat happened to Malaysia Airlines Flight 370 before it dropped off radar?\n\nHere’s how experts and officials reconstructed key moments of the flight in the immediate aftermath of its disappearance with 239 people aboard.\n\n***Takeoff***\n\nAd Feedback\n\nAd Feedback\n\nAll tracking systems are working as the Boeing 777-200ER takes off from the Malaysian capital of Kuala Lumpur, headed for Beijing.\n\n***ACARS sends communication***\n\nOne of the plane’s communication systems sends what turns out to be its last transmission, according to Malaysia Airlines CEO Ahmad Jauhari Yahya.\n\nAd Feedback\n\n“It showed nothing unusual. The 1:07 a.m. transmission showed a normal routing all the way to Beijing,” according to a statement from Malaysia’s Ministry of Transport.\n\nThe Aircraft Communications Addressing and Reporting System is the onboard computer that collects information – a lot of it – about aircraft and pilot performance. It’s akin to computers in automobiles that track oil levels and engine performance.\n\nAboard aircraft, ACARS computers measure thousands of data points and send the information via satellite to the airline, the engine manufacturer and other authorized parties, according to CNN aviation and airline correspondent Richard Quest.\n\nThe information is useful for operations, maintenance, scheduling and performance purposes, Quest said.\n\nVideo Ad Feedback\n\nThe search for MH370\n\n01:11   • Source: [CNN](https:\/\/www.cnn.com\/)\n\nThe search for MH370\n\n01:11\n\n***Voice check-in***\n\nSomeone in the cockpit makes a voice check-in with air traffic controllers as the plane is apparently leaving Malaysian airspace and entering Vietnamese airspace. Initial investigations indicate it was the co-pilot, Fariq Abdul Hamid, according to Malaysia Airlines officials.\n\n“All right, good night” were the final words from the cockpit, said [Zulazri Mohd Ahnuar,](http:\/\/www.cnn.com\/2016\/07\/26\/asia\/mh370-pilot-sister-interview\/) a Malaysian civil aviation officer.\n\nThe phrase “good night” is the radio parlance used by pilots when executing a handover from one airspace to another, Quest said.\n\n“That is normal. That happens a gazillion times,” Quest said. “‘All right, good night’ is a pleasantry at the end of radio communication.”\n\n***Transponder off***\n\nThe plane’s transponder stops communicating at 1:21 a.m., said Azharuddin Abdul Rahman, director of the Malaysian Department of Civil Aviation.\n\nA transponder sends electronic messages from the plane: “squawks” to radar systems about the flight number, altitude, speed and heading.\n\nThis is enormously useful information to air traffic controllers who are looking at scores of blips on their screens, and each blip is a plane emitting identifying information, thanks to the transponder.\n\n##### The search for MH370\n1 of 43\n\nWith the transponder off, “now the plane is flying blind from the ground’s point of view,” Quest said. “If there is radar there, the radar will see a blip, but they won’t know who it is, where they are going. They will just now know it’s there.”\n\nThat’s because the transponder isn’t sending identifying information about the plane. Shutting off the transponder is a simple turn of a switch in the cockpit, Quest said.\n\n“The air traffic controller should notice. I suppose it would cause alarm. … (The information from) a plane that you’re monitoring all of a sudden disappears,” Quest said.\n\n***Plane disappears from Thai military radar***\n\nThai military radar is tracking the plane’s signal, but it disappears at 1:22 a.m., a Royal Thai Air Force spokesman told CNN.\n\n***Thai radar picks up unknown aircraft***\n\nThe Thai radar station in southern Surathani province picks up an unknown aircraft flying in a direction opposite to what Flight 370 had been traveling, a Royal Thai Air Force spokesman told CNN.\n\n***Plane appears to change course***\n\nThe plane appears to have changed course in this time frame. The Malaysian government has not said when or if the plane was reprogrammed to fly off course.\n\nAgain, according to the Malaysians, the last data from the ACARS at 1:07 a.m. indicated that it “showed normal routing all the way to Beijing.”\n\n***Civilian radar loses contact with plane***\n\nMalaysian air traffic controllers in Subang, outside Kuala Lumpur, lose contact with the plane over the Gulf of Thailand between Malaysia and Vietnam at coordinates 06 55 15 N and 103 34 43 E.\n\n***Expected ACARS transmission doesn’t happen***\n\nThe ACARS was supposed to transmit a half-hour after it last did so. Therefore, it was supposed to transmit at 1:37 a.m. – but it didn’t, Yahya said.\n\nSo, the ACARS stopped communicating sometime between 1:07 and 1:37 a.m.\n\nIt’s a significant event: Turning off ACARS takes know-how, Quest said.\n\nIf the flight were hijacked or a target of terrorism, cutting off ACARS would be a strategic move because the system reports to satellites anything being done to the aircraft, Quest said.\n\n***Military radar detection***\n\nThough the Malaysian plane is not transmitting information – by ACARS or transponder – radar on the ground or elsewhere can still detect a plane in the air.\n\nAccording to a Malaysian Air Force official, military radar tracked the plane as it passed over the small island of Pulau Perak in the Strait of Malacca.\n\nAt this point, the plane was hundreds of miles off course. In fact, it was on the other side of the Malay Peninsula.\n\nMilitary radar showed that it flew in a westerly direction back over the Malay Peninsula, Malaysian Prime Minister Najib Razak said. This was the last time any civilian or military radar is known to have tracked the aircraft.\n\nThe focus now then turned to searching for the missing flight in the southern Indian Ocean. “The southern scenario seems more plausible,” a US official said.\n\nThe Malaysian military handed over its raw radar data to US and British officials, apparently setting aside concerns about any sensitive military intelligence.\n\nQuest called this sharing of information a “huge” development in the case.\n\n“They don’t want anyone to know how good their radar is. They obviously decided that doesn’t matter,” he said.\n\n“We don’t know much about the Malaysian military and that has been one of the issues,” Quest added. “It appears that Malaysia was providing an interpretation of the analysis – and not the raw data. Now they are handing over the raw data.”\n\n***Malaysia Airlines says it learns plane missing from radar***\n\nMalaysian air traffic controllers told Malaysia Airlines at 2:40 a.m. that Flight 370 was missing from radar, according to the airline.\n\n***Malaysia Airlines preliminary search***\n\nDuring this time, the airline “sourced every communication possible to (Flight 370) to locate its whereabouts before declaring that it had lost contact with the aircraft,” the company told CNN.\n\n“During this period of uncertainty, Malaysia Airlines needed to establish facts by contacting other air traffic controllers and aircraft flying within the same route,” the company said.\n\n***Malaysia Airlines issues alert***\n\nMalaysia Airlines said it issued a “code red” alert that the plane was missing from radar.\n\nThe airline said “code red” is when it declares that a crisis requires immediate deployment of emergency response plans. It said it took about an hour to issue the alert because it was trying to locate the plane and confirm that it was missing. To verify, it used various measures, including sending messages to the plane and awaiting a response.\n\n***Plane should have arrived in Beijing***\n\nThis was the time that Malaysia Airlines Flight 370 should have landed in China’s capital.\n\n***Public announcement of disappearance***\n\nMalaysia Airlines announces the plane’s disappearance on Facebook.\n\n**Unable to load video**\n\nPlease try again later.\n\nError occurred while fetching labs\n\nVideo Ad Feedback\n\nThese planes vanished, were never seen again\n\n02:13   • Source: [CNN](https:\/\/www.cnn.com\/)\n\nThese planes vanished, were never seen again\n\n02:13\n\n***Satellite ‘handshakes’***\n\nNajib revealed that a satellite tracked the plane at 8:11 a.m., more than seven hours after takeoff.\n\nNajib didn’t provide details on the satellite tracking, but it appears that orbiters high above the ocean detected the plane as the satellite or satellites attempted a series of “handshakes” – or electronic connections – with the plane below, Quest said.\n\nIt’s likely that the plane didn’t complete the handshake because its communication systems were disabled, Quest said.\n\nNevertheless, the satellites would have been able to trace a plane flying below them and would have extended an electronic message equivalent to a hailing: “There’s a plane: Hello, hello, hello? Do you have anything for us?” Quest said.\n\nThe Malaysian Prime Minister said the “raw satellite data” confirms the plane was Flight 370. The US National Transportation Safety Board and the Federal Aviation Administration, along with Britain’s Air Accidents Investigation Branch, concur, Najib said.\n\n##### Remembering the passengers of MH370\n1 of 12\n\n“Due to the type of satellite data, we are unable to confirm the precise location of the plane when it last made contact with the satellite,” Najib said.\n\nAd Feedback\n\nAd Feedback\n\nAd Feedback\n\nAd Feedback\n\nAd Feedback\n\nScan the QR code to download the CNN app on Google Play.\n\nScan the QR code to download the CNN app from the Apple Store.","meta_canonical":"com,cnn!www,\/2017\/01\/17\/world\/asia\/malaysia-airlines-flight-370-timeline s443"}

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Meta Title	Timeline of MH370 disappearance \| CNN
Meta Description	New details provide a clearer chronology about what may have happened to Malaysia Airlines Flight 370 between its takeoff and its last known spotting.
Meta Canonical	com,cnn!www,/2017/01/17/world/asia/malaysia-airlines-flight-370-timeline s443
Boilerpipe Text	Video Ad Feedback The search for MH370 01:11 • Source: CNN Malaysia Flight MH370 Search 15 videos Video Ad Feedback Inside the tower: Tracking down a missing flight 02:52 Now playing • Source: CNN Video Ad Feedback Search for flight MH370 suspended 02:43 Now playing • Source: CNN Video Ad Feedback Speculation continues about why MH370 disappeared 03:13 Now playing • Source: CNN Video Ad Feedback The search for MH370 01:11 Now playing • Source: CNN Video Ad Feedback MH370 searchers find uncharted shipwreck 00:57 Now playing • Source: CNN Video Ad Feedback Drone sub searches for Flight MH370 01:07 Now playing • Source: CNN Video Ad Feedback New video key in MH370 search? 01:01 Now playing • Source: CNN Video Ad Feedback New report suggests deliberate act in MH370 cockpit 01:18 Now playing • Source: CNN Video Ad Feedback MH370 debris search continues on Reunion Island 01:40 Now playing • Source: CNN Video Ad Feedback Report: MH370 searchers looking in wrong zone 02:00 Now playing • Source: CNN Video Ad Feedback MH370: Two years later 02:37 Now playing • Source: CNN Video Ad Feedback Families react to possible suicide route for MH370 02:45 Now playing • Source: CNN Video Ad Feedback Who were the pilots flying Malaysia Airlines Flight 370? 03:03 Now playing • Source: CNN Video Ad Feedback Video shows possible MH370 debris found 03:22 Now playing • Source: CNN Video Ad Feedback Chinese MH370 families demand certainty, closure 02:13 Now playing • Source: CNN Video Ad Feedback Inside the tower: Tracking down a missing flight 02:52 Now playing • Source: CNN Video Ad Feedback Search for flight MH370 suspended 02:43 Now playing • Source: CNN Video Ad Feedback Speculation continues about why MH370 disappeared 03:13 Now playing • Source: CNN Video Ad Feedback The search for MH370 01:11 Now playing • Source: CNN Video Ad Feedback MH370 searchers find uncharted shipwreck 00:57 Now playing • Source: CNN Video Ad Feedback Drone sub searches for Flight MH370 01:07 Now playing • Source: CNN Editor’s Note: An earlier version of this story initially appeared on CNN.com in 2014. CNN — What happened to Malaysia Airlines Flight 370 before it dropped off radar? Here’s how experts and officials reconstructed key moments of the flight in the immediate aftermath of its disappearance with 239 people aboard. Takeoff Ad Feedback Ad Feedback All tracking systems are working as the Boeing 777-200ER takes off from the Malaysian capital of Kuala Lumpur, headed for Beijing. ACARS sends communication One of the plane’s communication systems sends what turns out to be its last transmission, according to Malaysia Airlines CEO Ahmad Jauhari Yahya. Ad Feedback “It showed nothing unusual. The 1:07 a.m. transmission showed a normal routing all the way to Beijing,” according to a statement from Malaysia’s Ministry of Transport. The Aircraft Communications Addressing and Reporting System is the onboard computer that collects information – a lot of it – about aircraft and pilot performance. It’s akin to computers in automobiles that track oil levels and engine performance. Aboard aircraft, ACARS computers measure thousands of data points and send the information via satellite to the airline, the engine manufacturer and other authorized parties, according to CNN aviation and airline correspondent Richard Quest. The information is useful for operations, maintenance, scheduling and performance purposes, Quest said. Video Ad Feedback The search for MH370 01:11 • Source: CNN The search for MH370 01:11 Voice check-in Someone in the cockpit makes a voice check-in with air traffic controllers as the plane is apparently leaving Malaysian airspace and entering Vietnamese airspace. Initial investigations indicate it was the co-pilot, Fariq Abdul Hamid, according to Malaysia Airlines officials. “All right, good night” were the final words from the cockpit, said Zulazri Mohd Ahnuar, a Malaysian civil aviation officer. The phrase “good night” is the radio parlance used by pilots when executing a handover from one airspace to another, Quest said. “That is normal. That happens a gazillion times,” Quest said. “‘All right, good night’ is a pleasantry at the end of radio communication.” Transponder off The plane’s transponder stops communicating at 1:21 a.m., said Azharuddin Abdul Rahman, director of the Malaysian Department of Civil Aviation. A transponder sends electronic messages from the plane: “squawks” to radar systems about the flight number, altitude, speed and heading. This is enormously useful information to air traffic controllers who are looking at scores of blips on their screens, and each blip is a plane emitting identifying information, thanks to the transponder. The search for MH370 1 of 43 With the transponder off, “now the plane is flying blind from the ground’s point of view,” Quest said. “If there is radar there, the radar will see a blip, but they won’t know who it is, where they are going. They will just now know it’s there.” That’s because the transponder isn’t sending identifying information about the plane. Shutting off the transponder is a simple turn of a switch in the cockpit, Quest said. “The air traffic controller should notice. I suppose it would cause alarm. … (The information from) a plane that you’re monitoring all of a sudden disappears,” Quest said. Plane disappears from Thai military radar Thai military radar is tracking the plane’s signal, but it disappears at 1:22 a.m., a Royal Thai Air Force spokesman told CNN. Thai radar picks up unknown aircraft The Thai radar station in southern Surathani province picks up an unknown aircraft flying in a direction opposite to what Flight 370 had been traveling, a Royal Thai Air Force spokesman told CNN. Plane appears to change course The plane appears to have changed course in this time frame. The Malaysian government has not said when or if the plane was reprogrammed to fly off course. Again, according to the Malaysians, the last data from the ACARS at 1:07 a.m. indicated that it “showed normal routing all the way to Beijing.” Civilian radar loses contact with plane Malaysian air traffic controllers in Subang, outside Kuala Lumpur, lose contact with the plane over the Gulf of Thailand between Malaysia and Vietnam at coordinates 06 55 15 N and 103 34 43 E. Expected ACARS transmission doesn’t happen The ACARS was supposed to transmit a half-hour after it last did so. Therefore, it was supposed to transmit at 1:37 a.m. – but it didn’t, Yahya said. So, the ACARS stopped communicating sometime between 1:07 and 1:37 a.m. It’s a significant event: Turning off ACARS takes know-how, Quest said. If the flight were hijacked or a target of terrorism, cutting off ACARS would be a strategic move because the system reports to satellites anything being done to the aircraft, Quest said. Military radar detection Though the Malaysian plane is not transmitting information – by ACARS or transponder – radar on the ground or elsewhere can still detect a plane in the air. According to a Malaysian Air Force official, military radar tracked the plane as it passed over the small island of Pulau Perak in the Strait of Malacca. At this point, the plane was hundreds of miles off course. In fact, it was on the other side of the Malay Peninsula. Military radar showed that it flew in a westerly direction back over the Malay Peninsula, Malaysian Prime Minister Najib Razak said. This was the last time any civilian or military radar is known to have tracked the aircraft. The focus now then turned to searching for the missing flight in the southern Indian Ocean. “The southern scenario seems more plausible,” a US official said. The Malaysian military handed over its raw radar data to US and British officials, apparently setting aside concerns about any sensitive military intelligence. Quest called this sharing of information a “huge” development in the case. “They don’t want anyone to know how good their radar is. They obviously decided that doesn’t matter,” he said. “We don’t know much about the Malaysian military and that has been one of the issues,” Quest added. “It appears that Malaysia was providing an interpretation of the analysis – and not the raw data. Now they are handing over the raw data.” Malaysia Airlines says it learns plane missing from radar Malaysian air traffic controllers told Malaysia Airlines at 2:40 a.m. that Flight 370 was missing from radar, according to the airline. Malaysia Airlines preliminary search During this time, the airline “sourced every communication possible to (Flight 370) to locate its whereabouts before declaring that it had lost contact with the aircraft,” the company told CNN. “During this period of uncertainty, Malaysia Airlines needed to establish facts by contacting other air traffic controllers and aircraft flying within the same route,” the company said. Malaysia Airlines issues alert Malaysia Airlines said it issued a “code red” alert that the plane was missing from radar. The airline said “code red” is when it declares that a crisis requires immediate deployment of emergency response plans. It said it took about an hour to issue the alert because it was trying to locate the plane and confirm that it was missing. To verify, it used various measures, including sending messages to the plane and awaiting a response. Plane should have arrived in Beijing This was the time that Malaysia Airlines Flight 370 should have landed in China’s capital. Public announcement of disappearance Malaysia Airlines announces the plane’s disappearance on Facebook. Unable to load video Please try again later. Error occurred while fetching labs Video Ad Feedback These planes vanished, were never seen again 02:13 • Source: CNN These planes vanished, were never seen again 02:13 Satellite ‘handshakes’ Najib revealed that a satellite tracked the plane at 8:11 a.m., more than seven hours after takeoff. Najib didn’t provide details on the satellite tracking, but it appears that orbiters high above the ocean detected the plane as the satellite or satellites attempted a series of “handshakes” – or electronic connections – with the plane below, Quest said. It’s likely that the plane didn’t complete the handshake because its communication systems were disabled, Quest said. Nevertheless, the satellites would have been able to trace a plane flying below them and would have extended an electronic message equivalent to a hailing: “There’s a plane: Hello, hello, hello? Do you have anything for us?” Quest said. The Malaysian Prime Minister said the “raw satellite data” confirms the plane was Flight 370. The US National Transportation Safety Board and the Federal Aviation Administration, along with Britain’s Air Accidents Investigation Branch, concur, Najib said. Remembering the passengers of MH370 1 of 12 “Due to the type of satellite data, we are unable to confirm the precise location of the plane when it last made contact with the satellite,” Najib said. Ad Feedback Ad Feedback Ad Feedback Ad Feedback Ad Feedback Scan the QR code to download the CNN app on Google Play. Scan the QR code to download the CNN app from the Apple Store.
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Video Ad Feedback The search for MH370 01:11 • Source: [CNN](https://www.cnn.com/) Malaysia Flight MH370 Search 15 videos ![pkg molko inside air traffic control mh370\_00001803.jpg](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback Inside the tower: Tracking down a missing flight 02:52 Now playing • Source: [CNN](https://www.cnn.com/) ![Able Seaman Marine Technician Trent Goodman keeps lookout onboard HMAS SUCCESS whilst the ship is deployed in search of the missing Malaysia Airlines Flight MH370. \\\* Local Caption \\\* Joint Task Force 658 has been established by the ADF to coordinate supporting military forces engaged in the search for missing Malaysia Airlines flight MH370. Under the name Operation SOUTHERN INDIAN OCEAN, ADF assets from the Royal Australian Navy and Royal Australian Air Force have joined the search for debris, recovery and investigation of the missing flight.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback Search for flight MH370 suspended 02:43 Now playing • Source: [CNN](https://www.cnn.com/) ![mh370 pilot simulation rivers lok\_00005511.jpg](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback Speculation continues about why MH370 disappeared 03:13 Now playing • Source: [CNN](https://www.cnn.com/) ![MH370 disappearance search mobile orig\_00010530.jpg](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback The search for MH370 01:11 Now playing • Source: [CNN](https://www.cnn.com/) ![Searchers looking for MH370 take an image of a new shipwreck discovered in the course of the search.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback MH370 searchers find uncharted shipwreck 00:57 Now playing • Source: [CNN](https://www.cnn.com/) ![In this handout image provided by the U.S. Navy, The Bluefin 21, Artemis autonomous underwater vehicle (AUV) is hoisted back on board the Australian Defence Vessel Ocean Shield after successful buoyancy testing April 1, 2014 in the Indian Ocean. Joint Task Force 658 is currently supporting Operation Southern Indian Ocean, searching for the missing Malaysia Airlines flight MH370. The airliner disappeared on March 8 with 239 passengers and crew on board and is suspected to have crashed into the southern Indian Ocean. (Photo by Mass Communication Specialist 1st Class Peter D. Blair/U.S. Navy via Getty ](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback Drone sub searches for Flight MH370 01:07 Now playing • Source: [CNN](https://www.cnn.com/) ![mh370 new search area video ocean floor](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback New video key in MH370 search? 01:01 Now playing • Source: [CNN](https://www.cnn.com/) ![File photo: The missing Malaysia Airlines 777 airliner, photographed in Australia in 2010.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback New report suggests deliberate act in MH370 cockpit 01:18 Now playing • Source: [CNN](https://www.cnn.com/) ![mh370 cleaning for clues reunion mclaughlin pkg\_00000306.jpg](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback MH370 debris search continues on Reunion Island 01:40 Now playing • Source: [CNN](https://www.cnn.com/) ![Able Seaman Marine Technician Trent Goodman keeps lookout onboard HMAS SUCCESS whilst the ship is deployed in search of the missing Malaysia Airlines Flight MH370. \\\* Local Caption \\\* Joint Task Force 658 has been established by the ADF to coordinate supporting military forces engaged in the search for missing Malaysia Airlines flight MH370. Under the name Operation SOUTHERN INDIAN OCEAN, ADF assets from the Royal Australian Navy and Royal Australian Air Force have joined the search for debris, recovery and investigation of the missing flight.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback Report: MH370 searchers looking in wrong zone 02:00 Now playing • Source: [CNN](https://www.cnn.com/) ![mh370 two years later quest pkg\_00001028.jpg](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback MH370: Two years later 02:37 Now playing • Source: [CNN](https://www.cnn.com/) ![mh370 families react to pilot simulation route andrew stevens pkg\_00001404.jpg](https://media.cnn.com/api/v1/images/stellar/prod/160725024104-mh370-families-react-to-pilot-simulation-route-andrew-stevens-pkg-00001404.jpg?q=x_0,y_117,h_794,w_1412,c_crop/w_250) Video Ad Feedback Families react to possible suicide route for MH370 02:45 Now playing • Source: [CNN](https://www.cnn.com/) ![The pilots of Malaysia Airlines Flight 370 are Forst Officer Gambar Fariq Abdul Hamid, left, and Captain Zaharie Ahmad Shah at right.](https://media.cnn.com/api/v1/images/stellar/prod/140315205531-01-mh370-pilots-split-0315.jpg?q=h_552,w_980,x_0,y_0,c_crop/h_619,w_1100,c_lpad,b_rgb:061015/w_250) Video Ad Feedback Who were the pilots flying Malaysia Airlines Flight 370? 03:03 Now playing • Source: [CNN](https://www.cnn.com/) ![A Mozambican official told CNN the plane part, measuring 35 inches by 22 inches, was discovered by an American tourist, Blaine Gibson, and a local fisherman on a sandbank in Mozambique.](https://media.cnn.com/api/v1/images/stellar/prod/160302161500-03-mh370-mozambique.jpg?q=x_252,y_259,h_827,w_1471,c_crop/w_250) Video Ad Feedback Video shows possible MH370 debris found 03:22 Now playing • Source: [CNN](https://www.cnn.com/) ![BEIJING, CHINA - AUGUST 07: Chinese relatives of passengers missing on Malaysian Airlines flight MH370 cry as they kneel in front of the media outside the Malaysian Embassy during a protest by relatives on August 7, 2015 in Beijing, China. France expanded its search for debris off Reunion Island Friday a day after Malaysia's prime minister announced that a piece of wing discovered last week is from Malaysia Airlines Flight MH 370 which vanished last year. Officials and experts from other countries including the United States and Australia have been more cautious, saying that more investigating needs to be done. (Photo by Kevin Frayer/Getty Images)](https://media.cnn.com/api/v1/images/stellar/prod/150807155618-china-mh370-relatives.jpg?q=x_4,y_164,h_1940,w_3448,c_crop/w_250) Video Ad Feedback Chinese MH370 families demand certainty, closure 02:13 Now playing • Source: [CNN](https://www.cnn.com/) ![pkg molko inside air traffic control mh370\_00001803.jpg](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback Inside the tower: Tracking down a missing flight 02:52 Now playing • Source: [CNN](https://www.cnn.com/) ![Able Seaman Marine Technician Trent Goodman keeps lookout onboard HMAS SUCCESS whilst the ship is deployed in search of the missing Malaysia Airlines Flight MH370. \\\* Local Caption \\\* Joint Task Force 658 has been established by the ADF to coordinate supporting military forces engaged in the search for missing Malaysia Airlines flight MH370. Under the name Operation SOUTHERN INDIAN OCEAN, ADF assets from the Royal Australian Navy and Royal Australian Air Force have joined the search for debris, recovery and investigation of the missing flight.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback Search for flight MH370 suspended 02:43 Now playing • Source: [CNN](https://www.cnn.com/) ![mh370 pilot simulation rivers lok\_00005511.jpg](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback Speculation continues about why MH370 disappeared 03:13 Now playing • Source: [CNN](https://www.cnn.com/) ![MH370 disappearance search mobile orig\_00010530.jpg](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback The search for MH370 01:11 Now playing • Source: [CNN](https://www.cnn.com/) ![Searchers looking for MH370 take an image of a new shipwreck discovered in the course of the search.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback MH370 searchers find uncharted shipwreck 00:57 Now playing • Source: [CNN](https://www.cnn.com/) ![In this handout image provided by the U.S. Navy, The Bluefin 21, Artemis autonomous underwater vehicle (AUV) is hoisted back on board the Australian Defence Vessel Ocean Shield after successful buoyancy testing April 1, 2014 in the Indian Ocean. Joint Task Force 658 is currently supporting Operation Southern Indian Ocean, searching for the missing Malaysia Airlines flight MH370. The airliner disappeared on March 8 with 239 passengers and crew on board and is suspected to have crashed into the southern Indian Ocean. (Photo by Mass Communication Specialist 1st Class Peter D. Blair/U.S. Navy via Getty ](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback Drone sub searches for Flight MH370 01:07 Now playing • Source: [CNN](https://www.cnn.com/) See more videos Editor’s Note: An earlier version of this story initially appeared on CNN.com in 2014. CNN — What happened to Malaysia Airlines Flight 370 before it dropped off radar? Here’s how experts and officials reconstructed key moments of the flight in the immediate aftermath of its disappearance with 239 people aboard. ## 12:41 a.m. *Takeoff* Ad Feedback Ad Feedback All tracking systems are working as the Boeing 777-200ER takes off from the Malaysian capital of Kuala Lumpur, headed for Beijing. ## 1:07 a.m. *ACARS sends communication* One of the plane’s communication systems sends what turns out to be its last transmission, according to Malaysia Airlines CEO Ahmad Jauhari Yahya. Ad Feedback “It showed nothing unusual. The 1:07 a.m. transmission showed a normal routing all the way to Beijing,” according to a statement from Malaysia’s Ministry of Transport. The Aircraft Communications Addressing and Reporting System is the onboard computer that collects information – a lot of it – about aircraft and pilot performance. It’s akin to computers in automobiles that track oil levels and engine performance. Aboard aircraft, ACARS computers measure thousands of data points and send the information via satellite to the airline, the engine manufacturer and other authorized parties, according to CNN aviation and airline correspondent Richard Quest. The information is useful for operations, maintenance, scheduling and performance purposes, Quest said. ![MH370 disappearance search mobile orig\_00010530.jpg](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback The search for MH370 01:11 • Source: [CNN](https://www.cnn.com/) The search for MH370 01:11 ## 1:19 a.m. *Voice check-in* ![MH370 First Officer Fariq Abdul Hamid, left, and Captain Zaharie Ahmad Shah.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) MH370 First Officer Fariq Abdul Hamid, left, and Captain Zaharie Ahmad Shah. Someone in the cockpit makes a voice check-in with air traffic controllers as the plane is apparently leaving Malaysian airspace and entering Vietnamese airspace. Initial investigations indicate it was the co-pilot, Fariq Abdul Hamid, according to Malaysia Airlines officials. “All right, good night” were the final words from the cockpit, said [Zulazri Mohd Ahnuar,](http://www.cnn.com/2016/07/26/asia/mh370-pilot-sister-interview/) a Malaysian civil aviation officer. The phrase “good night” is the radio parlance used by pilots when executing a handover from one airspace to another, Quest said. “That is normal. That happens a gazillion times,” Quest said. “‘All right, good night’ is a pleasantry at the end of radio communication.” ## 1:21 a.m. *Transponder off* The plane’s transponder stops communicating at 1:21 a.m., said Azharuddin Abdul Rahman, director of the Malaysian Department of Civil Aviation. A transponder sends electronic messages from the plane: “squawks” to radar systems about the flight number, altitude, speed and heading. This is enormously useful information to air traffic controllers who are looking at scores of blips on their screens, and each blip is a plane emitting identifying information, thanks to the transponder. ![Chinese police at the Beijing airport stand beside the arrival board showing delayed Flight 370 in red on March 8, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Chinese police at the Beijing airport stand beside the arrival board showing delayed Flight 370 in red on March 8, 2014. MARK RALSTON/AFP/Getty Images ![Malaysia Airlines Group CEO Ahmad Juahari Yahya, front, speaks during a news conference at a hotel in Sepang on March 8, 2014. "We deeply regret that we have lost all contacts" with the jet, he said.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Malaysia Airlines Group CEO Ahmad Juahari Yahya, front, speaks during a news conference at a hotel in Sepang on March 8, 2014. "We deeply regret that we have lost all contacts" with the jet, he said. Lai Seng Sin/AP ![Two years after Malaysia Airlines Flight 370 went missing, a relative of one of the passengers burns incense in Beijing on March 8, 2016. Flight 370 vanished on March 8, 2014, as it flew from Kuala Lumpur, Malaysia, to Beijing. There were 239 people on board.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Two years after Malaysia Airlines Flight 370 went missing, a relative of one of the passengers burns incense in Beijing on March 8, 2016. Flight 370 vanished on March 8, 2014, as it flew from Kuala Lumpur, Malaysia, to Beijing. There were 239 people on board. Visual China Group/Getty Images ![On July 29, police carry a piece of \<a href="http://www.cnn.com/2015/07/30/world/gallery/debris-found-reunion-island/index.html" target="\_blank"\>debris on Reunion Island,\</a\> a French territory in the Indian Ocean. A week later, authorities confirmed that the debris was from the missing flight.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) On July 29, police carry a piece of [debris on Reunion Island,](http://www.cnn.com/2015/07/30/world/gallery/debris-found-reunion-island/index.html) a French territory in the Indian Ocean. A week later, authorities confirmed that the debris was from the missing flight. Lucas Marie/AP ![Staff members with the Australian Transport Safety Bureau examine a piece of aircraft debris at their laboratory in Canberra, Australia, on July 20. The flap was found in June by residents on Pemba Island off the coast of Tanzania, and officials had said it was highly likely to have come from Flight 370. Experts at the Australian Transport Safety Bureau, which is heading up the search for the plane, confirmed that the part was indeed from the missing aircraft.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Staff members with the Australian Transport Safety Bureau examine a piece of aircraft debris at their laboratory in Canberra, Australia, on July 20. The flap was found in June by residents on Pemba Island off the coast of Tanzania, and officials had said it was highly likely to have come from Flight 370. Experts at the Australian Transport Safety Bureau, which is heading up the search for the plane, confirmed that the part was indeed from the missing aircraft. ATSB/AP ![In late February, American tourist Blaine Gibson found a piece of plane debris off Mozambique, a discovery that renewed hope of solving the mystery of the missing flight. The piece measured 35 inches by 22 inches. A U.S. official said it was likely the wreckage came from a Boeing 777, which MH370 was.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) In late February, American tourist Blaine Gibson found a piece of plane debris off Mozambique, a discovery that renewed hope of solving the mystery of the missing flight. The piece measured 35 inches by 22 inches. A U.S. official said it was likely the wreckage came from a Boeing 777, which MH370 was. Blaine Gibson ![Relatives of the flight's passengers console each other outside the Malaysia Airlines office in Subang, Malaysia, on February 12, 2015. Protesters had demanded that the airline withdraw the statement that all 239 people aboard the plane were dead.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Relatives of the flight's passengers console each other outside the Malaysia Airlines office in Subang, Malaysia, on February 12, 2015. Protesters had demanded that the airline withdraw the statement that all 239 people aboard the plane were dead. MANAN VATSYAYANA/AFP/Getty Images ![A police officer watches a couple cry outside the airline's office building in Beijing after officials refused to meet with them on June 11, 2014. The couple's son was on the plane.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) A police officer watches a couple cry outside the airline's office building in Beijing after officials refused to meet with them on June 11, 2014. The couple's son was on the plane. Andy Wong/AP ![Members of the media scramble to speak with Azharuddin Abdul Rahman, director general of Malaysia's Civil Aviation Department, at a hotel in Kuala Lumpur, Malaysia, on May 27, 2014. Data from communications between satellites and the missing flight was released the day before, more than two months after relatives of passengers said they requested it be made public.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Members of the media scramble to speak with Azharuddin Abdul Rahman, director general of Malaysia's Civil Aviation Department, at a hotel in Kuala Lumpur, Malaysia, on May 27, 2014. Data from communications between satellites and the missing flight was released the day before, more than two months after relatives of passengers said they requested it be made public. MOHD RASFAN/AFP/Getty Images ![Operators aboard the Australian ship Ocean Shield move Bluefin-21, the U.S. Navy's autonomous underwater vehicle, into position to search for the jet on April 14, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Operators aboard the Australian ship Ocean Shield move Bluefin-21, the U.S. Navy's autonomous underwater vehicle, into position to search for the jet on April 14, 2014. Peter D. Blair/U.S. Navy/UPI/LANDOV ![A member of the Royal New Zealand Air Force looks out of a window while searching for debris off the coast of western Australia on April 13, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) A member of the Royal New Zealand Air Force looks out of a window while searching for debris off the coast of western Australia on April 13, 2014. Greg Wood/Pool/AP ![The HMS Echo, a vessel with the British Roya; Navy, moves through the waters of the southern Indian Ocean on April 12, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) The HMS Echo, a vessel with the British Roya; Navy, moves through the waters of the southern Indian Ocean on April 12, 2014. British Ministry of Defence ![A Royal Australian Air Force AP-3C Orion, on a mission to drop sonar buoys to assist in the search, flies past the Australian vessel Ocean Shield on April 9, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) A Royal Australian Air Force AP-3C Orion, on a mission to drop sonar buoys to assist in the search, flies past the Australian vessel Ocean Shield on April 9, 2014. LSIS Bradley Darvill/Australian Defense Force/AP ![A relative of a missing passenger cries at a vigil in Beijing on April 8, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) A relative of a missing passenger cries at a vigil in Beijing on April 8, 2014. STRinger/AFP/Getty Images ![Australian Defense Force divers scan the water for debris in the southern Indian Ocean on April 7, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Australian Defense Force divers scan the water for debris in the southern Indian Ocean on April 7, 2014. Lt. Ryan Davis/Australian Defense Force/AP ![A towed pinger locator is readied to be deployed off the deck of the Australian vessel Ocean Shield on April 7, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) A towed pinger locator is readied to be deployed off the deck of the Australian vessel Ocean Shield on April 7, 2014. Kelly Hunt/Australian Defense Force/UPI/LANDOV ![A member of the Royal New Zealand Air Force looks at a flare in the Indian Ocean during search operations on April 4, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) A member of the Royal New Zealand Air Force looks at a flare in the Indian Ocean during search operations on April 4, 2014. Nick Perry/Pool/Getty Images ![On March 30, 2014, a woman in Kuala Lumpur prepares for an event in honor of those aboard Flight 370.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) On March 30, 2014, a woman in Kuala Lumpur prepares for an event in honor of those aboard Flight 370. Rahman Roslan/Getty Images ![The sole representative for the families of Flight 370 passengers leaves a conference at a Beijing hotel on March 28, 2014, after other relatives left en masse to protest the Malaysian government's response to their questions.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) The sole representative for the families of Flight 370 passengers leaves a conference at a Beijing hotel on March 28, 2014, after other relatives left en masse to protest the Malaysian government's response to their questions. Ng Han Guan/AP ![A member of the Royal Australian Air Force is silhouetted against the southern Indian Ocean during the search for the missing jet on March 27, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) A member of the Royal Australian Air Force is silhouetted against the southern Indian Ocean during the search for the missing jet on March 27, 2014. Michael Martina/Pool/Getty Images ![Flight Lt. Jayson Nichols looks at a map aboard a Royal Australian Air Force aircraft during a search on March 27, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Flight Lt. Jayson Nichols looks at a map aboard a Royal Australian Air Force aircraft during a search on March 27, 2014. Michael Martina/Pool/AP ![People in Kuala Lumpur light candles during a ceremony held for the missing flight's passengers on March 27, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) People in Kuala Lumpur light candles during a ceremony held for the missing flight's passengers on March 27, 2014. Aaron Favila/AP ![Malaysian Prime Minister Najib Razak, center, delivers a statement about the flight on March 24, 2014. Razak's announcement came after the airline sent a text message to relatives saying it "deeply regrets that we have to assume beyond any reasonable doubt that MH 370 has been lost and that none of those onboard survived."](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Malaysian Prime Minister Najib Razak, center, delivers a statement about the flight on March 24, 2014. Razak's announcement came after the airline sent a text message to relatives saying it "deeply regrets that we have to assume beyond any reasonable doubt that MH 370 has been lost and that none of those onboard survived." MOHD RASFAN/AFP/Getty Images ![Grieving relatives of missing passengers leave a hotel in Beijing on March 24, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Grieving relatives of missing passengers leave a hotel in Beijing on March 24, 2014. GOH CHAI HIN/AFP/Getty Images ![A passenger views a weather map in the departures terminal of Kuala Lumpur International Airport on March 22, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) A passenger views a weather map in the departures terminal of Kuala Lumpur International Airport on March 22, 2014. Rufus Cox/Getty Images ![A Chinese satellite captured this image, released on March 22, 2014, of a floating object in the Indian Ocean, according to China's State Administration of Science. It was a possible lead in the search for the missing plane. Surveillance planes were looking for two objects spotted by satellite imagery in remote, treacherous waters more than 1,400 miles from the west coast of Australia.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) A Chinese satellite captured this image, released on March 22, 2014, of a floating object in the Indian Ocean, according to China's State Administration of Science. It was a possible lead in the search for the missing plane. Surveillance planes were looking for two objects spotted by satellite imagery in remote, treacherous waters more than 1,400 miles from the west coast of Australia. China's State Admiration of Science ![Satellite imagery provided by the Australian Maritime Safety Authority on March 20, 2014, showed debris in the southern Indian Ocean that could have been from Flight 370. The announcement by Australian officials raised hopes of a breakthrough in the frustrating search.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Satellite imagery provided by the Australian Maritime Safety Authority on March 20, 2014, showed debris in the southern Indian Ocean that could have been from Flight 370. The announcement by Australian officials raised hopes of a breakthrough in the frustrating search. Digital Globe/AMSA/Getty Images ![Another satellite shot provided by the Australian Maritime Safety Authority shows possible debris from the flight.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Another satellite shot provided by the Australian Maritime Safety Authority shows possible debris from the flight. DigitalGlobe/AMSA via Getty Images ![A distraught relative of a missing passenger breaks down while talking to reporters at Kuala Lumpur International Airport on March 19, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) A distraught relative of a missing passenger breaks down while talking to reporters at Kuala Lumpur International Airport on March 19, 2014. AZHAR RAHIM/EPA/LANDOV ![On March 18, 2014, a relative of a missing passenger tells reporters in Beijing about a hunger strike to protest authorities' handling of information about the missing jet.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) On March 18, 2014, a relative of a missing passenger tells reporters in Beijing about a hunger strike to protest authorities' handling of information about the missing jet. Andy Wong/AP ![U.S. Navy crew members assist in search-and-rescue operations in the Indian Ocean on March 16, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) U.S. Navy crew members assist in search-and-rescue operations in the Indian Ocean on March 16, 2014. U.S. Navy/Eric A. Pastor/AP ![Members of the Chinese navy continue search operations on March 13, 2014. After starting in the sea between Malaysia and Vietnam, the plane's last confirmed location, search efforts expanded west into the Indian Ocean.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Members of the Chinese navy continue search operations on March 13, 2014. After starting in the sea between Malaysia and Vietnam, the plane's last confirmed location, search efforts expanded west into the Indian Ocean. XINHUA/LANDOV ![A Vietnamese military official looks out an aircraft window during search operations March 13, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) A Vietnamese military official looks out an aircraft window during search operations March 13, 2014. LUONG THAI LINH/EPA/LANDOV ![Malaysian air force members look for debris near Kuala Lumpur on March 13, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Malaysian air force members look for debris near Kuala Lumpur on March 13, 2014. Rahman Roslan/Getty Images ![Relatives of missing passengers wait for the latest news at a hotel in Beijing on March 12, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Relatives of missing passengers wait for the latest news at a hotel in Beijing on March 12, 2014. Andy Wong/AP ![A member of the Vietnamese air force checks a map while searching for the missing plane on March 11, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) A member of the Vietnamese air force checks a map while searching for the missing plane on March 11, 2014. HOANG DINH NAM/AFP/Getty Images ![A Vietnamese air force plane found traces of oil that authorities had suspected to be from the missing Malaysia Airlines plane, the Vietnamese government online newspaper reported on March 8, 2014. However, a sample from the slick showed it was bunker oil, typically used to power large cargo ships, Malaysia's state news agency, Bernama, reported on March 10, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) A Vietnamese air force plane found traces of oil that authorities had suspected to be from the missing Malaysia Airlines plane, the Vietnamese government online newspaper reported on March 8, 2014. However, a sample from the slick showed it was bunker oil, typically used to power large cargo ships, Malaysia's state news agency, Bernama, reported on March 10, 2014. EPA/TIENPHONG.VN ![A U.S. Navy Seahawk helicopter lands aboard the USS Pinckney to change crews on March 9, 2014, before returning to search for the missing plane in the Gulf of Thailand.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) A U.S. Navy Seahawk helicopter lands aboard the USS Pinckney to change crews on March 9, 2014, before returning to search for the missing plane in the Gulf of Thailand. Chris D. Boardman/U.S. Navy via Getty Images ![Buddhist monks at Kuala Lumpur International Airport offer a special prayer for the missing passengers on March 9, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Buddhist monks at Kuala Lumpur International Airport offer a special prayer for the missing passengers on March 9, 2014. Lai Seng Sin/AP ![Members of a Chinese emergency response team board a rescue vessel at the port of Sanya in China's Hainan province on March 9, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Members of a Chinese emergency response team board a rescue vessel at the port of Sanya in China's Hainan province on March 9, 2014. Zhao Yingquan/Xinhua/Landov ![The rescue vessel sets out from Sanya in the South China Sea on March 9, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) The rescue vessel sets out from Sanya in the South China Sea on March 9, 2014. Zhao Yingquan/Xinhua/Landov ![Malaysian Prime Minister Najib Razak, center, arrives to meet family members of missing passengers at the reception center at Kuala Lumpur International Airport on March 8, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Malaysian Prime Minister Najib Razak, center, arrives to meet family members of missing passengers at the reception center at Kuala Lumpur International Airport on March 8, 2014. MANAN VATSYAYANA/AFP/Getty Images ![A relative of two missing passengers reacts at their home in Kuala Lumpur on March 8, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) A relative of two missing passengers reacts at their home in Kuala Lumpur on March 8, 2014. MOHD RASFAN/AFP/Getty Images ![Chinese police at the Beijing airport stand beside the arrival board showing delayed Flight 370 in red on March 8, 2014.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Chinese police at the Beijing airport stand beside the arrival board showing delayed Flight 370 in red on March 8, 2014. MARK RALSTON/AFP/Getty Images ![Malaysia Airlines Group CEO Ahmad Juahari Yahya, front, speaks during a news conference at a hotel in Sepang on March 8, 2014. "We deeply regret that we have lost all contacts" with the jet, he said.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Malaysia Airlines Group CEO Ahmad Juahari Yahya, front, speaks during a news conference at a hotel in Sepang on March 8, 2014. "We deeply regret that we have lost all contacts" with the jet, he said. Lai Seng Sin/AP ![Two years after Malaysia Airlines Flight 370 went missing, a relative of one of the passengers burns incense in Beijing on March 8, 2016. Flight 370 vanished on March 8, 2014, as it flew from Kuala Lumpur, Malaysia, to Beijing. There were 239 people on board.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Two years after Malaysia Airlines Flight 370 went missing, a relative of one of the passengers burns incense in Beijing on March 8, 2016. Flight 370 vanished on March 8, 2014, as it flew from Kuala Lumpur, Malaysia, to Beijing. There were 239 people on board. Visual China Group/Getty Images ![On July 29, police carry a piece of \<a href="http://www.cnn.com/2015/07/30/world/gallery/debris-found-reunion-island/index.html" target="\_blank"\>debris on Reunion Island,\</a\> a French territory in the Indian Ocean. A week later, authorities confirmed that the debris was from the missing flight.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) On July 29, police carry a piece of [debris on Reunion Island,](http://www.cnn.com/2015/07/30/world/gallery/debris-found-reunion-island/index.html) a French territory in the Indian Ocean. A week later, authorities confirmed that the debris was from the missing flight. Lucas Marie/AP ##### The search for MH370 1 of 43 Prev Next With the transponder off, “now the plane is flying blind from the ground’s point of view,” Quest said. “If there is radar there, the radar will see a blip, but they won’t know who it is, where they are going. They will just now know it’s there.” That’s because the transponder isn’t sending identifying information about the plane. Shutting off the transponder is a simple turn of a switch in the cockpit, Quest said. “The air traffic controller should notice. I suppose it would cause alarm. … (The information from) a plane that you’re monitoring all of a sudden disappears,” Quest said. ## 1:22 a.m. *Plane disappears from Thai military radar* Thai military radar is tracking the plane’s signal, but it disappears at 1:22 a.m., a Royal Thai Air Force spokesman told CNN. ## 1:28 a.m. *Thai radar picks up unknown aircraft* The Thai radar station in southern Surathani province picks up an unknown aircraft flying in a direction opposite to what Flight 370 had been traveling, a Royal Thai Air Force spokesman told CNN. ## 1:21 a.m. - 1:28 a.m. *Plane appears to change course* The plane appears to have changed course in this time frame. The Malaysian government has not said when or if the plane was reprogrammed to fly off course. Again, according to the Malaysians, the last data from the ACARS at 1:07 a.m. indicated that it “showed normal routing all the way to Beijing.” ![](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) ## About 1:30 a.m. *Civilian radar loses contact with plane* Malaysian air traffic controllers in Subang, outside Kuala Lumpur, lose contact with the plane over the Gulf of Thailand between Malaysia and Vietnam at coordinates 06 55 15 N and 103 34 43 E. ## 1:37 a.m. *Expected ACARS transmission doesn’t happen* The ACARS was supposed to transmit a half-hour after it last did so. Therefore, it was supposed to transmit at 1:37 a.m. – but it didn’t, Yahya said. So, the ACARS stopped communicating sometime between 1:07 and 1:37 a.m. It’s a significant event: Turning off ACARS takes know-how, Quest said. If the flight were hijacked or a target of terrorism, cutting off ACARS would be a strategic move because the system reports to satellites anything being done to the aircraft, Quest said. ## 2:15 a.m. *Military radar detection* Though the Malaysian plane is not transmitting information – by ACARS or transponder – radar on the ground or elsewhere can still detect a plane in the air. According to a Malaysian Air Force official, military radar tracked the plane as it passed over the small island of Pulau Perak in the Strait of Malacca. At this point, the plane was hundreds of miles off course. In fact, it was on the other side of the Malay Peninsula. Military radar showed that it flew in a westerly direction back over the Malay Peninsula, Malaysian Prime Minister Najib Razak said. This was the last time any civilian or military radar is known to have tracked the aircraft. The focus now then turned to searching for the missing flight in the southern Indian Ocean. “The southern scenario seems more plausible,” a US official said. [![mh370 new search area video ocean floor](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Geoscience Australia video Related video New video key in MH370 search?](https://edition.cnn.com/videos/world/2014/12/12/pkg-orig-mh370-new-search-area-video-ocean-floor.cnn) The Malaysian military handed over its raw radar data to US and British officials, apparently setting aside concerns about any sensitive military intelligence. Quest called this sharing of information a “huge” development in the case. “They don’t want anyone to know how good their radar is. They obviously decided that doesn’t matter,” he said. “We don’t know much about the Malaysian military and that has been one of the issues,” Quest added. “It appears that Malaysia was providing an interpretation of the analysis – and not the raw data. Now they are handing over the raw data.” ## 2:40 a.m. *Malaysia Airlines says it learns plane missing from radar* Malaysian air traffic controllers told Malaysia Airlines at 2:40 a.m. that Flight 370 was missing from radar, according to the airline. ## 2:40 - 3:45 a.m. *Malaysia Airlines preliminary search* During this time, the airline “sourced every communication possible to (Flight 370) to locate its whereabouts before declaring that it had lost contact with the aircraft,” the company told CNN. “During this period of uncertainty, Malaysia Airlines needed to establish facts by contacting other air traffic controllers and aircraft flying within the same route,” the company said. ## 3:45 a.m. *Malaysia Airlines issues alert* Malaysia Airlines said it issued a “code red” alert that the plane was missing from radar. The airline said “code red” is when it declares that a crisis requires immediate deployment of emergency response plans. It said it took about an hour to issue the alert because it was trying to locate the plane and confirm that it was missing. To verify, it used various measures, including sending messages to the plane and awaiting a response. ## 6:30 a.m. *Plane should have arrived in Beijing* This was the time that Malaysia Airlines Flight 370 should have landed in China’s capital. ## 7:24 a.m. *Public announcement of disappearance* Malaysia Airlines announces the plane’s disappearance on Facebook. Unable to load video Please try again later. Error occurred while fetching labs Video Ad Feedback These planes vanished, were never seen again 02:13 • Source: [CNN](https://www.cnn.com/) These planes vanished, were never seen again 02:13 ## 8:11 a.m. *Satellite ‘handshakes’* Najib revealed that a satellite tracked the plane at 8:11 a.m., more than seven hours after takeoff. Najib didn’t provide details on the satellite tracking, but it appears that orbiters high above the ocean detected the plane as the satellite or satellites attempted a series of “handshakes” – or electronic connections – with the plane below, Quest said. It’s likely that the plane didn’t complete the handshake because its communication systems were disabled, Quest said. Nevertheless, the satellites would have been able to trace a plane flying below them and would have extended an electronic message equivalent to a hailing: “There’s a plane: Hello, hello, hello? Do you have anything for us?” Quest said. The Malaysian Prime Minister said the “raw satellite data” confirms the plane was Flight 370. The US National Transportation Safety Board and the Federal Aviation Administration, along with Britain’s Air Accidents Investigation Branch, concur, Najib said. ![Ch'ng Mei Ling, a Malaysian citizen who lives in Pennsylvania, is a process engineer at a chemical company.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Ch'ng Mei Ling, a Malaysian citizen who lives in Pennsylvania, is a process engineer at a chemical company. Family photo ![We do not have photos of all 239 passengers, but we wanted to remember that there are loved ones around the world missing them right now.\<a href="http://www.cnn.com/specials/asia/mh370"\> View CNN's complete coverage of Flight 370.\</a\>](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) We do not have photos of all 239 passengers, but we wanted to remember that there are loved ones around the world missing them right now. [View CNN's complete coverage of Flight 370.](http://www.cnn.com/specials/asia/mh370) ![There is still no way to know for sure why Flight MH370 ended, but we are learning more about the lives of those on board. CNN is remembering them through snapshots shared with us. ](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) There is still no way to know for sure why Flight MH370 ended, but we are learning more about the lives of those on board. CNN is remembering them through snapshots shared with us. ![Rodney and Mary Burrows were looking forward to becoming first-time grandparents after their return home to Australia.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Rodney and Mary Burrows were looking forward to becoming first-time grandparents after their return home to Australia. From www.sbs.com ![Australians Catherine and Robert Lawton were traveling with friends on vacation when the flight disappeared.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Australians Catherine and Robert Lawton were traveling with friends on vacation when the flight disappeared. From www.sbs.com ![Paul Weeks was traveling to Mongolia for a new job as an engineer. His wife says Paul left behind his watch and his wedding ring before the trip, in case anything happened to him while he was away. Anderson spoke with \<a href="http://cnn.it/1kN1Yxu" target="\_blank" target="\_blank"\>Paul's brother & sister\</a\> who said they are coping by spending time together as a family.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Paul Weeks was traveling to Mongolia for a new job as an engineer. His wife says Paul left behind his watch and his wedding ring before the trip, in case anything happened to him while he was away. Anderson spoke with [Paul's brother & sister](http://cnn.it/1kN1Yxu) who said they are coping by spending time together as a family. From www.sbs.com ![Chandrika Sharma, left, was on Flight 370; her daughter Meghna and husband K.S. Narendran wait patiently, trying to manage their anxiety and longing for her return.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Chandrika Sharma, left, was on Flight 370; her daughter Meghna and husband K.S. Narendran wait patiently, trying to manage their anxiety and longing for her return. Courtesy K.S. Narendran ![Muktesh Mukherjee and Xiaomo Bai had been vacationing in Vietnam and were on their way home to their two young sons in Beijing.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Muktesh Mukherjee and Xiaomo Bai had been vacationing in Vietnam and were on their way home to their two young sons in Beijing. Xiaomo Bai/Muktesh Mukherjee/Facebook ![76-year-old Liu Rusheng, an accomplished calligrapher and one of the oldest passengers on the flight, was in Malaysia to attend an art exhibition with his wife.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) 76-year-old Liu Rusheng, an accomplished calligrapher and one of the oldest passengers on the flight, was in Malaysia to attend an art exhibition with his wife. From The Star Online ![Teens Hadrien Wattrelos and Zhao Yan are shown in a photo on Wattrelos' Facebook page. The photo is captioned, simply, "I love you," in French. ](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Teens Hadrien Wattrelos and Zhao Yan are shown in a photo on Wattrelos' Facebook page. The photo is captioned, simply, "I love you," in French. From Facebook ![Firman Chandra Siregar, 24, studied electrical engineering in Indonesia and was on his way to Beijing on board Flight 370 to start a new job at an oil company.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Firman Chandra Siregar, 24, studied electrical engineering in Indonesia and was on his way to Beijing on board Flight 370 to start a new job at an oil company. Binsar Bakkara/AP ![Patrick Francis Gomes, center, was the in-flight supervisor for the missing plane. His daughter describes him as a quiet person with a sense of humor.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Patrick Francis Gomes, center, was the in-flight supervisor for the missing plane. His daughter describes him as a quiet person with a sense of humor. From the Gomes family ![Ch'ng Mei Ling, a Malaysian citizen who lives in Pennsylvania, is a process engineer at a chemical company.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Ch'ng Mei Ling, a Malaysian citizen who lives in Pennsylvania, is a process engineer at a chemical company. Family photo ![We do not have photos of all 239 passengers, but we wanted to remember that there are loved ones around the world missing them right now.\<a href="http://www.cnn.com/specials/asia/mh370"\> View CNN's complete coverage of Flight 370.\</a\>](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) We do not have photos of all 239 passengers, but we wanted to remember that there are loved ones around the world missing them right now. [View CNN's complete coverage of Flight 370.](http://www.cnn.com/specials/asia/mh370) ![There is still no way to know for sure why Flight MH370 ended, but we are learning more about the lives of those on board. CNN is remembering them through snapshots shared with us. ](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) There is still no way to know for sure why Flight MH370 ended, but we are learning more about the lives of those on board. CNN is remembering them through snapshots shared with us. ![Rodney and Mary Burrows were looking forward to becoming first-time grandparents after their return home to Australia.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Rodney and Mary Burrows were looking forward to becoming first-time grandparents after their return home to Australia. From www.sbs.com ##### Remembering the passengers of MH370 1 of 12 Prev Next “Due to the type of satellite data, we are unable to confirm the precise location of the plane when it last made contact with the satellite,” Najib said. 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Readable Markdown	Video Ad Feedback The search for MH370 01:11 • Source: [CNN](https://www.cnn.com/) Malaysia Flight MH370 Search 15 videos ![pkg molko inside air traffic control mh370\_00001803.jpg](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback Inside the tower: Tracking down a missing flight 02:52 Now playing • Source: [CNN](https://www.cnn.com/) ![Able Seaman Marine Technician Trent Goodman keeps lookout onboard HMAS SUCCESS whilst the ship is deployed in search of the missing Malaysia Airlines Flight MH370. \\\* Local Caption \\\* Joint Task Force 658 has been established by the ADF to coordinate supporting military forces engaged in the search for missing Malaysia Airlines flight MH370. Under the name Operation SOUTHERN INDIAN OCEAN, ADF assets from the Royal Australian Navy and Royal Australian Air Force have joined the search for debris, recovery and investigation of the missing flight.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback Search for flight MH370 suspended 02:43 Now playing • Source: [CNN](https://www.cnn.com/) ![mh370 pilot simulation rivers lok\_00005511.jpg](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback Speculation continues about why MH370 disappeared 03:13 Now playing • Source: [CNN](https://www.cnn.com/) Video Ad Feedback The search for MH370 01:11 Now playing • Source: [CNN](https://www.cnn.com/) ![Searchers looking for MH370 take an image of a new shipwreck discovered in the course of the search.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback MH370 searchers find uncharted shipwreck 00:57 Now playing • Source: [CNN](https://www.cnn.com/) Video Ad Feedback Drone sub searches for Flight MH370 01:07 Now playing • Source: [CNN](https://www.cnn.com/) ![mh370 new search area video ocean floor](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback New video key in MH370 search? 01:01 Now playing • Source: [CNN](https://www.cnn.com/) ![File photo: The missing Malaysia Airlines 777 airliner, photographed in Australia in 2010.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback New report suggests deliberate act in MH370 cockpit 01:18 Now playing • Source: [CNN](https://www.cnn.com/) Video Ad Feedback MH370 debris search continues on Reunion Island 01:40 Now playing • Source: [CNN](https://www.cnn.com/) ![Able Seaman Marine Technician Trent Goodman keeps lookout onboard HMAS SUCCESS whilst the ship is deployed in search of the missing Malaysia Airlines Flight MH370. \\\* Local Caption \\\* Joint Task Force 658 has been established by the ADF to coordinate supporting military forces engaged in the search for missing Malaysia Airlines flight MH370. Under the name Operation SOUTHERN INDIAN OCEAN, ADF assets from the Royal Australian Navy and Royal Australian Air Force have joined the search for debris, recovery and investigation of the missing flight.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback Report: MH370 searchers looking in wrong zone 02:00 Now playing • Source: [CNN](https://www.cnn.com/) Video Ad Feedback MH370: Two years later 02:37 Now playing • Source: [CNN](https://www.cnn.com/) ![mh370 families react to pilot simulation route andrew stevens pkg\_00001404.jpg](https://media.cnn.com/api/v1/images/stellar/prod/160725024104-mh370-families-react-to-pilot-simulation-route-andrew-stevens-pkg-00001404.jpg?q=x_0,y_117,h_794,w_1412,c_crop/w_250) Video Ad Feedback Families react to possible suicide route for MH370 02:45 Now playing • Source: [CNN](https://www.cnn.com/) ![The pilots of Malaysia Airlines Flight 370 are Forst Officer Gambar Fariq Abdul Hamid, left, and Captain Zaharie Ahmad Shah at right.](https://media.cnn.com/api/v1/images/stellar/prod/140315205531-01-mh370-pilots-split-0315.jpg?q=h_552,w_980,x_0,y_0,c_crop/h_619,w_1100,c_lpad,b_rgb:061015/w_250) Video Ad Feedback Who were the pilots flying Malaysia Airlines Flight 370? 03:03 Now playing • Source: [CNN](https://www.cnn.com/) ![A Mozambican official told CNN the plane part, measuring 35 inches by 22 inches, was discovered by an American tourist, Blaine Gibson, and a local fisherman on a sandbank in Mozambique.](https://media.cnn.com/api/v1/images/stellar/prod/160302161500-03-mh370-mozambique.jpg?q=x_252,y_259,h_827,w_1471,c_crop/w_250) Video Ad Feedback Video shows possible MH370 debris found 03:22 Now playing • Source: [CNN](https://www.cnn.com/) ![BEIJING, CHINA - AUGUST 07: Chinese relatives of passengers missing on Malaysian Airlines flight MH370 cry as they kneel in front of the media outside the Malaysian Embassy during a protest by relatives on August 7, 2015 in Beijing, China. France expanded its search for debris off Reunion Island Friday a day after Malaysia's prime minister announced that a piece of wing discovered last week is from Malaysia Airlines Flight MH 370 which vanished last year. Officials and experts from other countries including the United States and Australia have been more cautious, saying that more investigating needs to be done. (Photo by Kevin Frayer/Getty Images)](https://media.cnn.com/api/v1/images/stellar/prod/150807155618-china-mh370-relatives.jpg?q=x_4,y_164,h_1940,w_3448,c_crop/w_250) Video Ad Feedback Chinese MH370 families demand certainty, closure 02:13 Now playing • Source: [CNN](https://www.cnn.com/) Video Ad Feedback Inside the tower: Tracking down a missing flight 02:52 Now playing • Source: [CNN](https://www.cnn.com/) ![Able Seaman Marine Technician Trent Goodman keeps lookout onboard HMAS SUCCESS whilst the ship is deployed in search of the missing Malaysia Airlines Flight MH370. \\\* Local Caption \\\* Joint Task Force 658 has been established by the ADF to coordinate supporting military forces engaged in the search for missing Malaysia Airlines flight MH370. Under the name Operation SOUTHERN INDIAN OCEAN, ADF assets from the Royal Australian Navy and Royal Australian Air Force have joined the search for debris, recovery and investigation of the missing flight.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback Search for flight MH370 suspended 02:43 Now playing • Source: [CNN](https://www.cnn.com/) Video Ad Feedback Speculation continues about why MH370 disappeared 03:13 Now playing • Source: [CNN](https://www.cnn.com/) ![MH370 disappearance search mobile orig\_00010530.jpg](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback The search for MH370 01:11 Now playing • Source: [CNN](https://www.cnn.com/) ![Searchers looking for MH370 take an image of a new shipwreck discovered in the course of the search.](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback MH370 searchers find uncharted shipwreck 00:57 Now playing • Source: [CNN](https://www.cnn.com/) ![In this handout image provided by the U.S. Navy, The Bluefin 21, Artemis autonomous underwater vehicle (AUV) is hoisted back on board the Australian Defence Vessel Ocean Shield after successful buoyancy testing April 1, 2014 in the Indian Ocean. Joint Task Force 658 is currently supporting Operation Southern Indian Ocean, searching for the missing Malaysia Airlines flight MH370. The airliner disappeared on March 8 with 239 passengers and crew on board and is suspected to have crashed into the southern Indian Ocean. (Photo by Mass Communication Specialist 1st Class Peter D. Blair/U.S. Navy via Getty ](https://edition.cnn.com/media/sites/cnn/cnn-fallback-image.jpg) Video Ad Feedback Drone sub searches for Flight MH370 01:07 Now playing • Source: [CNN](https://www.cnn.com/) Editor’s Note: An earlier version of this story initially appeared on CNN.com in 2014. CNN — What happened to Malaysia Airlines Flight 370 before it dropped off radar? Here’s how experts and officials reconstructed key moments of the flight in the immediate aftermath of its disappearance with 239 people aboard. *Takeoff* Ad Feedback Ad Feedback All tracking systems are working as the Boeing 777-200ER takes off from the Malaysian capital of Kuala Lumpur, headed for Beijing. *ACARS sends communication* One of the plane’s communication systems sends what turns out to be its last transmission, according to Malaysia Airlines CEO Ahmad Jauhari Yahya. Ad Feedback “It showed nothing unusual. The 1:07 a.m. transmission showed a normal routing all the way to Beijing,” according to a statement from Malaysia’s Ministry of Transport. The Aircraft Communications Addressing and Reporting System is the onboard computer that collects information – a lot of it – about aircraft and pilot performance. It’s akin to computers in automobiles that track oil levels and engine performance. Aboard aircraft, ACARS computers measure thousands of data points and send the information via satellite to the airline, the engine manufacturer and other authorized parties, according to CNN aviation and airline correspondent Richard Quest. The information is useful for operations, maintenance, scheduling and performance purposes, Quest said. Video Ad Feedback The search for MH370 01:11 • Source: [CNN](https://www.cnn.com/) The search for MH370 01:11 *Voice check-in* Someone in the cockpit makes a voice check-in with air traffic controllers as the plane is apparently leaving Malaysian airspace and entering Vietnamese airspace. Initial investigations indicate it was the co-pilot, Fariq Abdul Hamid, according to Malaysia Airlines officials. “All right, good night” were the final words from the cockpit, said [Zulazri Mohd Ahnuar,](http://www.cnn.com/2016/07/26/asia/mh370-pilot-sister-interview/) a Malaysian civil aviation officer. The phrase “good night” is the radio parlance used by pilots when executing a handover from one airspace to another, Quest said. “That is normal. That happens a gazillion times,” Quest said. “‘All right, good night’ is a pleasantry at the end of radio communication.” *Transponder off* The plane’s transponder stops communicating at 1:21 a.m., said Azharuddin Abdul Rahman, director of the Malaysian Department of Civil Aviation. A transponder sends electronic messages from the plane: “squawks” to radar systems about the flight number, altitude, speed and heading. This is enormously useful information to air traffic controllers who are looking at scores of blips on their screens, and each blip is a plane emitting identifying information, thanks to the transponder. ##### The search for MH370 1 of 43 With the transponder off, “now the plane is flying blind from the ground’s point of view,” Quest said. “If there is radar there, the radar will see a blip, but they won’t know who it is, where they are going. They will just now know it’s there.” That’s because the transponder isn’t sending identifying information about the plane. Shutting off the transponder is a simple turn of a switch in the cockpit, Quest said. “The air traffic controller should notice. I suppose it would cause alarm. … (The information from) a plane that you’re monitoring all of a sudden disappears,” Quest said. *Plane disappears from Thai military radar* Thai military radar is tracking the plane’s signal, but it disappears at 1:22 a.m., a Royal Thai Air Force spokesman told CNN. *Thai radar picks up unknown aircraft* The Thai radar station in southern Surathani province picks up an unknown aircraft flying in a direction opposite to what Flight 370 had been traveling, a Royal Thai Air Force spokesman told CNN. *Plane appears to change course* The plane appears to have changed course in this time frame. The Malaysian government has not said when or if the plane was reprogrammed to fly off course. Again, according to the Malaysians, the last data from the ACARS at 1:07 a.m. indicated that it “showed normal routing all the way to Beijing.” *Civilian radar loses contact with plane* Malaysian air traffic controllers in Subang, outside Kuala Lumpur, lose contact with the plane over the Gulf of Thailand between Malaysia and Vietnam at coordinates 06 55 15 N and 103 34 43 E. *Expected ACARS transmission doesn’t happen* The ACARS was supposed to transmit a half-hour after it last did so. Therefore, it was supposed to transmit at 1:37 a.m. – but it didn’t, Yahya said. So, the ACARS stopped communicating sometime between 1:07 and 1:37 a.m. It’s a significant event: Turning off ACARS takes know-how, Quest said. If the flight were hijacked or a target of terrorism, cutting off ACARS would be a strategic move because the system reports to satellites anything being done to the aircraft, Quest said. *Military radar detection* Though the Malaysian plane is not transmitting information – by ACARS or transponder – radar on the ground or elsewhere can still detect a plane in the air. According to a Malaysian Air Force official, military radar tracked the plane as it passed over the small island of Pulau Perak in the Strait of Malacca. At this point, the plane was hundreds of miles off course. In fact, it was on the other side of the Malay Peninsula. Military radar showed that it flew in a westerly direction back over the Malay Peninsula, Malaysian Prime Minister Najib Razak said. This was the last time any civilian or military radar is known to have tracked the aircraft. The focus now then turned to searching for the missing flight in the southern Indian Ocean. “The southern scenario seems more plausible,” a US official said. The Malaysian military handed over its raw radar data to US and British officials, apparently setting aside concerns about any sensitive military intelligence. Quest called this sharing of information a “huge” development in the case. “They don’t want anyone to know how good their radar is. They obviously decided that doesn’t matter,” he said. “We don’t know much about the Malaysian military and that has been one of the issues,” Quest added. “It appears that Malaysia was providing an interpretation of the analysis – and not the raw data. Now they are handing over the raw data.” *Malaysia Airlines says it learns plane missing from radar* Malaysian air traffic controllers told Malaysia Airlines at 2:40 a.m. that Flight 370 was missing from radar, according to the airline. *Malaysia Airlines preliminary search* During this time, the airline “sourced every communication possible to (Flight 370) to locate its whereabouts before declaring that it had lost contact with the aircraft,” the company told CNN. “During this period of uncertainty, Malaysia Airlines needed to establish facts by contacting other air traffic controllers and aircraft flying within the same route,” the company said. *Malaysia Airlines issues alert* Malaysia Airlines said it issued a “code red” alert that the plane was missing from radar. The airline said “code red” is when it declares that a crisis requires immediate deployment of emergency response plans. It said it took about an hour to issue the alert because it was trying to locate the plane and confirm that it was missing. To verify, it used various measures, including sending messages to the plane and awaiting a response. *Plane should have arrived in Beijing* This was the time that Malaysia Airlines Flight 370 should have landed in China’s capital. *Public announcement of disappearance* Malaysia Airlines announces the plane’s disappearance on Facebook. Unable to load video Please try again later. Error occurred while fetching labs Video Ad Feedback These planes vanished, were never seen again 02:13 • Source: [CNN](https://www.cnn.com/) These planes vanished, were never seen again 02:13 *Satellite ‘handshakes’* Najib revealed that a satellite tracked the plane at 8:11 a.m., more than seven hours after takeoff. Najib didn’t provide details on the satellite tracking, but it appears that orbiters high above the ocean detected the plane as the satellite or satellites attempted a series of “handshakes” – or electronic connections – with the plane below, Quest said. It’s likely that the plane didn’t complete the handshake because its communication systems were disabled, Quest said. Nevertheless, the satellites would have been able to trace a plane flying below them and would have extended an electronic message equivalent to a hailing: “There’s a plane: Hello, hello, hello? Do you have anything for us?” Quest said. The Malaysian Prime Minister said the “raw satellite data” confirms the plane was Flight 370. The US National Transportation Safety Board and the Federal Aviation Administration, along with Britain’s Air Accidents Investigation Branch, concur, Najib said. ##### Remembering the passengers of MH370 1 of 12 “Due to the type of satellite data, we are unable to confirm the precise location of the plane when it last made contact with the satellite,” Najib said. Ad Feedback Ad Feedback Ad Feedback Ad Feedback Ad Feedback Scan the QR code to download the CNN app on Google Play. Scan the QR code to download the CNN app from the Apple Store.
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