NTSB

The pilot’s incapacitation, resulting in a loss of aircraft control.

The pilot’s failure to select and maintain an adequate terrain avoidance cruising altitude. Contributing factors were the dark conditions, the rising mountainous terrain and the controller’s failure to issue a terrain-related safety alert.

Aircraft control not possible by the pilot following a premature deployment of a parachute as a parachutist exited the jump airplane during cruise flight.

The pilot’s inadequate preflight preparation, which resulted in an attempted takeoff with full flaps, and subsequent loss of control.

The pilot’s inadequate in-flight planning and decision making which led to VFR flight into IMC and loss of aircraft control.

The pilot’s failure to maintain clearance from high terrain while maneuvering.

The pilot’s inadequate in-flight planning and decision making, which resulted in fuel exhaustion.

The pilot’s failure to maintain adequate airspeed while maneuvering at low altitude, which resulted in a stall and subsequent uncontrolled descent and collision with the water.

The pilot’s inadequate in-flight planning/decision making, resulting in the loss of engine power due to fuel exhaustion.