Incident Overview
A pilot experienced multiple engine power losses during a flight. While on the downwind leg, the engine lost power, quit, then restarted. The pilot attempted to switch fuel tanks but was unsuccessful. When the airplane turned onto the base leg, the engine quit again. Unable to reach the runway, the pilot turned toward an open field for a forced landing.
Engine Restart and Collision
Just prior to touchdown, the engine regained power, prompting the pilot to turn back toward the runway. However, the engine quit again, and the airplane struck an empty tanker truck. The impact severed the right wing from the fuselage.
Postcrash Investigation
After the accident, investigators found no evidence of a fuel spill or fuel smell around the right wing. The fuel line to the carburetor contained no fuel, and the carburetor fuel bowl held less than one tablespoon of fuel. In contrast, the left wing fuel tank contained approximately 15 gallons of fuel.
Engine Test
Following the wreckage retrieval, the engine was prepared for a run test. Fuel was supplied via the left wing. The fuel pump was activated, and the engine started, running smoothly for three minutes before being shut down. Both fuel and oil pressure gauges indicated normal ranges during the test.