NTSB

Probable Cause: The jumper’s unintentional deployment of his emergency parachute and subsequent impact with the airplane’s horizontal stabilizer.

Probable Cause: Insufficient lubrication of the engine’s internal components, which resulted in a total loss of engine power.

Probable Cause: The pilot’s failure to maintain control of the airplane during the takeoff and his exceedance of the airplane’s critical angle of attack, which resulted in an aerodynamic stall and spin at low altitude. Contributing to the accident was the pilot’s lack of experience in the accident airplane make and model.

Probable Cause: The pilot’s inadequate preflight inspection, which resulted in an attempted departure with the flight control lock device installed, and subsequent nose landing gear collapse.