NTSB

Probable cause: The partial loss of engine power due to water contamination in the fuel system.

Probable cause: A partial loss of engine power during initial climb for reasons that could not be determined because extensive fire damage precluded thorough examination of the engine and its associated systems.

Probable cause: The noncertificated pilot’s failure to maintain clearance from residential buildings and trees in gusting wind conditions.

Probable cause: A total loss of engine power due to the engine’s unresolved high operating temperatures, which resulted in failure of the distributor rotor and drive shaft, and the pilot’s failure to maintain airspeed during the subsequent forced landing, which resulted in an aerodynamic stall and loss of control.

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

Probable cause: The pilot’s improper starting procedure before hand propping the engine, and his subsequent attempt to stop the moving airplane, which resulted in him being struck by the propeller.

Probable cause: The noninstrument-rated pilot’s improper decision to continue visual flight rules flight into instrument meteorological conditions, which resulted in controlled flight into terrain.

Probable cause: The pilot’s inability to avoid a collision with an unauthorized vehicle on the runway during the landing roll and the truck driver’s decision to cross the runway in front of the airplane.

Probable cause: The flight instructor’s failure to perform a go-around during final approach, which resulted in an aerodynamic stall and a hard landing. Contributing to the accident was the flight instructor’s failure to brief the student pilot on the positive transfer of aircraft control during preflight.