NTSB

Probable Cause: The failure of the engine-driven fuel pump, which resulted in a total loss of engine power. Contributing to the failure of the fuel pump was an unknown non-ferrous metallic debris that was noted throughout the airplane’s fuel system.

Probable Cause: The pilot’s flooding the engine with fuel during a cold engine start, which resulted in an engine fire.

Probable Cause: The pilot’s decision to land on the snow-covered runway and his failure to attain/maintain aircraft control during landing rollout.

Probable Cause: The pilot’s decision to initiate a visual flight rules flight into night instrument meteorological conditions, resulting in a loss of control in-flight due to spatial disorientation. Contributing to the accident was the pilot’s lack of qualifications and experience in night instrument meteorological conditions.

Probable Cause: The pilot’s decision to fly the airplane without confirming it had been released from maintenance, which resulted in a partial loss of engine power due to loose magnetos. Contributing to the outcome was the pilot’s failure to maintain adequate airspeed and his exceedance of the airplane’s critical angle of attack, which resulted in an aerodynamic stall.

The pilot’s failure to maintain clearance from trees during the initial climb following an aborted precautionary landing. Contributing to the outcome were the inoperative runway lights, which reduced the likelihood that the pilot could successfully land the airplane on the runway at night.

The occupant’s improper throttle movement during the start procedure, which resulted in forward movement and loss of airplane control.