The cockpit had the mandated anti-hijacker fortified doors that could prevent locked-out crew or passengers from interfering with a suicide or hijacking into the Southern Ocean . This can be compared to SilkAir Flight 185 ( a posited pilot suicide incident in 1997 ) , EgyptAir Flight 990 ( 1999 ) , LAM Mozambique Airlines Flight 470 ( 2013 ) , as well as the later Germanwings Flight 9525 ( 2015 ) . On 17 February 2014 , less than three weeks before Flight 370 disappeared , Ethiopian Airlines Flight 702 had been hijacked when the co-pilot locked the captain out of the cabin and diverted the aircraft to seek asylum in Switzerland
LAM Mozambique Airlines Flight 470
LAM Mozambique Airlines Flight 470
Malaysia Airlines Flight 370 unofficial disappearance theories