In 1979 may 11 Southern Airlines flight 305 from JFK to an airport in San Francisco crashed about 15m after takeoff in a random city in Pennsylvania about 1 and a half months later the NTSB found out the cause was engine failure all 392 died with 0 survivors
In 2009 may 12 American Airlines flight 1202 was flying in the Gulf of Mexico and about 36m after takeoff it started to descend rapidly about 500ft every 2 seconds it was in a Boeing 777 the pilots tried their best to stop it but nothing worked and so about 37m after takeoff it crashed somewhere in the Gulf of Mexico 321 died and no one survived and about 2 and a half months later NTSB later found out that the cause was pilot error
