NTSB

Probable cause: The pilot’s failure to identify and correct his construction error of a critical structural component, which resulted in a loss of airplane control during takeoff. Contributing to the accident was the pilot’s impairment due to hi

Probable cause: The pilot’s unstabilized approach and failure to attain the proper touchdown point, which resulted in a runway overrun and collision with a snowbank.

Probable cause: The pilot’s failure to attain a proper touchdown point following a loss of engine power and his inability to stop the airplane on the short, soft runway. Contributing to the accident was the inadequate maintenance of the airplane

Probable cause: The pilot’s failure to maintain directional control during the taxi on skis on hard-packed snow in gusting wind conditions.

Probable cause: The pilot’s decision to maneuver the airplane over mountainous terrain in high-density altitude conditions, which resulted in the airplane’s inability to maintain altitude or establish a climb.

Probable cause: The pilot’s decision to take off with a known master brake cylinder leak and his subsequent failure to maintain directional control during landing.

Probable cause: The pilot’s inadvertent contact with the propeller while hand propping the engine, which resulted in a fatal injury.

Probable cause: A loss of engine power for reasons that could not be determined due to postcrash thermal damage to the engine accessories and the airframe. Contributing to the accident was the pilot’s failure to navigate to any of the ava

Probable cause: The pilot’s in-flight fuel mismanagement and subsequent failure to maintain adequate airspeed while attempting to land on the runway, which resulted in an aerodynamic stall and a hard landing.