MAS plane — Credit: The original uploader was Ohconfucius at English Wikipedia. · CC BY-SA 2.0
Malaysia Airlines Flight 370 disappeared on 8 March 2014 after departing Kuala Lumpur for Beijing with 227 passengers and 12 crew members aboard. Malaysia's prime minister at the time, Najib Razak, said the flight ended somewhere in the Indian Ocean but gave no further explanation. Debris found in later searches almost certainly originated from the aircraft, but the incomplete account left the disappearance unresolved and drew scrutiny from critics, some of whom framed their doubts as conspiracy theories.
Commentators, including psychology lecturer Rob Brotherton, said a lack of conclusive information after major events tends to generate competing explanations. Relatives of people aboard questioned the government's account and protested at the Malaysian embassy in Beijing for more information. Scrutiny grew after the Joint Agency Coordination Centre announced on 29 May 2014 that the aircraft was not in the area searched since April 2014, and commentators noted the lack of any distress signal. In 2015, searches recovered debris from a Boeing 777 that washed ashore on Réunion Island and was later deemed "highly likely" to be from the aircraft.
Some conspiracy-focused websites called the official account a cover-up, arguing a Boeing 777 could not survive an ocean impact intact and that more debris should have been found; these arguments lost support once aircraft fragments were positively identified. Harvard professor Cass Sunstein told the Wall Street Journal in March 2014 that the government's early conflicting statements helped explain interest in alternative theories, and former FAA inspector David Soucie said on CNN that weighing multiple theories is normal when little evidence exists.
A prominent theory holds that the flight's captain deliberately diverted the aircraft. News reports in July 2014 said police were weighing the culpability of everyone aboard and named the captain the prime suspect if human intervention was proven, though no charge was ever filed. The FBI reconstructed deleted data from the captain's home flight simulator; a Malaysian spokesman said "nothing sinister" was found, but a 2017 Australian Transport Safety Bureau report described a deleted route into the southern Indian Ocean resembling the aircraft's likely path. Former British Airways pilot Simon Hardy said the route reflected "very accurate flying rather than just a coincidence" and that the captain had flown deliberately over his home island before diverting toward the ocean. Former Australian prime minister Tony Abbott said Malaysian officials had privately suspected murder-suicide early on, and in 2022 two French researchers published a similar theory. The captain's family has denied any wrongdoing, and the theory remains unproven.
Other proposed explanations include a hijacking to a remote location, though no group claimed responsibility; a terrorist attack, raised by commentators including Rupert Murdoch; and a diversion to the U.S. base at Diego Garcia, publicly dismissed by a White House spokesman and called unsupported by the FBI. A shoot-down hypothesis, raised by commentators such as Rush Limbaugh and explored in a book by Nigel Cawthorne, was called "highly not possible" by a Malaysian defence official. Other suggested causes include an in-flight fire and a cyberattack on the flight-management system, which Boeing said its systems were protected against.
Additional theories — that the aircraft was consumed by a black hole, struck by a meteor, hijacked to North Korea, or linked to a technology patent held by passengers — circulated online and were rebutted by scientists or fact-checkers, or called statistically implausible. A letter claiming responsibility for a previously unknown "Chinese Martyrs Brigade" was judged fraudulent. Commentators also noted since-dismissed claims linking the flight's fate to the shoot-down of Flight 17 over Ukraine in July 2014 and the crash of Indonesia AirAsia Flight 8501 in December 2014.
Malaysia Airlines Flight 370 disappeared after departing Kuala Lumpur for Beijing with 227 passengers and 12 crew members aboard.
2014-03-09
Members of the Chinese news media received an open letter, purportedly from a previously unknown Chinese Martyrs Brigade, claiming responsibility for the flight's loss; the claim was later judged fraudulent.
2014-03-18
At a White House briefing, press secretary Jay Carney publicly dismissed the theory that the aircraft had landed at the U.S. Naval base on Diego Garcia.
2014-03-20
Harvard professor Cass Sunstein told the Wall Street Journal that the Malaysian government's conflicting early statements helped explain public interest in alternative theories.
2014-03-24
Malaysian Prime Minister Najib Razak said in a CNN interview that radar had tracked an aircraft making a turn back, without certainty it was Flight 370, and that it was not deemed hostile.
2014-03-26
Former FAA inspector David Soucie said on CNN that weighing competing theories is a normal part of an accident investigation when little evidence is available.
2014-05
Nigel Cawthorne's book Flight MH370: The Mystery, alleging the aircraft was shot down during a joint military exercise, was published.
2014-05-29
The Joint Agency Coordination Centre announced that the aircraft had not been in the area authorities had been searching since April 2014.
2014-07-17
Malaysia Airlines Flight 17 was shot down over Ukraine, later prompting claims, since dismissed by experts, linking the two Boeing 777 losses.
2014-07-23
News reports said Malaysian police were considering the possible culpability of everyone aboard the aircraft and had identified the captain as the prime suspect if human intervention was proven.
2014-08
The book Goodnight Malaysian 370, which attributed the disappearance to a deliberate act by the captain without offering conclusive evidence or a motive, was published.
2014-12-22
Former Proteus Airlines head Marc Dugain claimed the aircraft may have been shot down by U.S. military personnel near Diego Garcia.
2014-12-28
Indonesia AirAsia Flight 8501 crashed, prompting online comparisons to Flight 370 and Flight 17.
2015-07
Debris from a Boeing 777 washed ashore on Réunion Island and was later deemed highly likely to be from the aircraft, further marginalizing several hijacking theories.
2016-02
Debris found with apparent burn marks was later determined by U.S. investigators to show resin discoloration rather than fire damage.
2017
The Australian Transport Safety Bureau's report on the operational search described a deleted flight-simulator route into the southern Indian Ocean with similarities to the aircraft's likely path.
2018-05
Former British Airways pilot Simon Hardy repeated on television his claim that the captain had deliberately flown over his home island before diverting toward the southern Indian Ocean.
2020-02
Former Australian Prime Minister Tony Abbott said in a television documentary that Malaysian officials had privately suspected murder-suicide by the pilot from early in the investigation.
2022
Retired French captain Patrick Blelly and telecom engineer Jean-Luc Marchand published a report using flight-simulator data to argue for a deliberate-pilot scenario.
2024-03
A British television documentary suggested the captain could have used manual cabin-system controls to deprive the aircraft's occupants of oxygen.
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MAS plane
Credit: The original uploader was Ohconfucius at English Wikipedia. · CC BY-SA 2.0 · Source
Malaysia Airlines Flight 370 disappeared on 8 March 2014 while flying from Kuala Lumpur to Beijing with 239 people aboard; Malaysia's government said the flight ended in the Indian Ocean but gave no fuller explanation, and the lack of a definitive account produced a wide range of competing theories about its fate.
