NTSB

Probable cause: The student pilot’s failure to maintain directional control during landing.

Probable cause: The pilot’s failure to extend the landing gear before landing, which resulted in a gear-up landing and a runway overrun.

Probable cause: The pilot’s exceedance of the biplane’s critical angle of attack during initial climb, which resulted in an aerodynamic stall and collision with trees.

Probable cause: The pilot receiving instruction’s failure to maintain directional control during landing.

Probable cause: The student pilot’s overpriming of the engine and the flight instructor’s delayed remedial action, which resulted in an engine fire.

Probable cause: The pilot’s improper preflight fuel planning, which resulted in a loss of engine power due to fuel exhaustion.

Probable cause: The pilot’s exceedance of the airplane’s critical angle of attack during a go-around. Contributing to the accident was the pilot’s decision to attempt to close a passenger door during a critical phase of flight.

Probable cause: The flight instructor’s failure to ensure that the wing flaps were properly configured for takeoff, which resulted in an aerodynamic stall and loss of control during the initial climb.