If the official assumption is confirmed , Flight 370 was at the time of its disappearance the deadliest aviation incident in the history of Malaysian Airlines , surpassing the 1977 hijacking and crash of Malaysian Airline System Flight 653 that killed all 100 passengers and crew aboard , and the deadliest involving a Boeing 777 , surpassing Asiana Airlines Flight 214 ( 3 fatalities ) . In both of those categories , Flight 370 was surpassed 131 days later by Malaysia Airlines Flight 17 , another Boeing 777-200ER , which was shot down on 17 July 2014 , killing all 298 people aboard
Asiana Airlines Flight 214
Asiana Airlines Flight 214
Malaysia Airlines Flight 370