NTSB

Probable cause: An in-flight separation of the right wing due to upward and rearward bending that led to an overstress fracture. The reason for the upward and rearward bending could not be determined based on the available information.

Probable cause: The pilot’s improper verification of the fuel quantity during the preflight inspection, which resulted in fuel exhaustion and a subsequent loss of engine power. Contributing to the accident was the pilot’s distraction due to a malfunctioning hangar door and a telephone call while preparing for the flight.   

Probable cause: Maintenance personnel’s failure to remove a paper towel from the engine during recent maintenance, which resulted in oil starvation, the failure of a connecting rod, and a catastrophic engine failure and subsequent total loss of engine power.

Probable cause: The failure of both pilots in both airplanes to see and avoid the other airplane as they converged nearly head-on at the same altitude.

Probable cause: The pilot’s failure to see and avoid a post during a go-around following a landing on unsuitable terrain.

Probable cause: The pilot’s failure to maintain a proper approach path during landing in dusky, flat light conditions, which resulted in a tree strike.

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

Probable cause: Undetermined based on the available evidence.

Probable cause: Collision with a deer during landing.