ATC & NAVIGATION
Language/communication problems, VFR flight in IMC, Wrong or misinterpreted instructions
Wrong Centre of Gravity, Airplane overloaded etc.
Collisions between aircraft on the ground and in midair, collisions with birds and objects.
Foreign Object Damage (FOD), Wake vortex.
Alcohol/drug usage, Mental condition, Non adherence to procedures, Insufficient rest / fatigue etc.
Hangar/ground fire, Inflight fire, etc.
Fast, heavy landing, Tailscrape, Locked rudders/ailerons/gustlock, Wrong takeoff configuration (flaps/trim) etc.
Failure to follow AD and SB's, Wrong installation of parts etc.
CFIT, emergency landing, Crash out of control etc.
Sabotage (bomb), Shot down, Hijack etc.
Icing, Lightningstrike, Thunderstorm, Windshear etc.
probable cause undetermined