NTSB

Probable cause: The engine’s excessive cylinder head temperatures and the subsequent seizing of the engine, which resulted from an engine control unit that caused the engine’s fuel-air mixture to be too lean.

Probable cause: The pilot’s improper landing flare, which resulted in a hard, bounced landing.

Probable cause: The pilot’s inadequate preflight and in-flight fuel management, which resulted in an intermittent loss of engine power due to fuel starvation.

Probable cause: The pilot’s selection of an unsuitable taxiway, which resulted in the wings striking hidden fence posts.  

Probable cause: The pilot’s failure to maintain yaw control and the exceedance of the airplane’s critical angle of attack in the traffic pattern, which resulted in an aerodynamic stall/spin.

Probable cause: The pilot’s excessive rudder and brake applications during landing, which caused the airplane to nose over.

Probable cause: The pilot’s failure to attain adequate airspeed during the short field takeoff, which resulted in an exceedance of the airplane’s critical angle of attack and an aerodynamic stall.

Probable cause: An in-flight collision with a bird.