Incident Overview
A pilot departed without visually verifying the fuel quantity during preflight, relying on a pre-existing fuel supply that had already been used for 3.4 hours of flight. Fuel exhaustion occurred 1.2 hours into the flight. The pilot overflew a suitable forced landing site and attempted a last-minute turn to return to it. During the turn at low altitude, the aircraft stalled and collided with trees on a steep downslope.
Aircraft Inspection
Post-accident inspection of the aircraft and the surrounding terrain revealed no signs of fuel. The wreckage and ground showed no evidence of fuel leakage or presence.
Known Deficiencies
The aircraft's fuel gauges were known to be inaccurate. The operator had posted a sign instructing pilots to visually check the fuel quantity. Additionally, a separate fuel consumption log was maintained for the aircraft.
Occupant Restraint
The rear bench seat had three occupants, but only one seat belt was used for all three. During the accident, the seat belt separated from the floor mounts.