What happened
The pilot, who also held an Airframe and Powerplant (A&P) mechanic certificate, noted during the preflight inspection that the aircraft required additional fuel. Following the refueling process, he observed a significant quantity of water within the fuel samples drawn from the system. Acting on his mechanical knowledge, the pilot attempted to purge the trapped water from the fuel lines.
The engine runup, takeoff, and initial cruise phase proceeded without incident. However, approximately thirty minutes into the flight, the engine began running roughly before ultimately losing power. The aircraft was forced down in an area characterized by dense vegetation, resulting in substantial damage to the airframe.
The investigation
Post-accident examination of the fuel system uncovered a milky solution composed of soap and water. It was determined that the aircraft had undergone a wash shortly before this flight, which introduced the contaminant into the fuel supply.