Background
A pilot conducted an annual inspection of the aircraft. Following the inspection, a thorough ground check was performed, and the aircraft was taxied out for a test flight.
Accident Sequence
During the takeoff roll, the aircraft became airborne. At approximately 50 feet above ground level (AGL), the engine experienced a loss of power. The pilot executed a landing on the runway overrun, which was covered with about 9 inches of crusted snow. Upon touchdown, the aircraft nosed over.
Investigation Findings
Post-accident examination of the engine, fuel, and fuel system revealed no problems. The engine was subsequently operated at takeoff power for two minutes using both the left and right fuel tanks, and no discrepancies were observed. The cause of the power loss was not determined.