What happened
Prior to the flight, a mechanic observed evidence of fuel leaking from the drain holes located at the left wing root, just behind the main cabin door. This issue was reported to the pilot-rated passenger before the aircraft departed. The flight was operated with the pilot, the aircraft owner, and a passenger who also served as a mechanic.
Approximately 14 minutes after takeoff, radar tracking indicated that the aircraft type transitioned from a climbing phase into a descent while performing a 180-degree turn. During this period, observers reported seeing smoke and flames trailing from the aircraft. The aircraft subsequently struck power lines and trees before impacting a flat field situated within hilly terrain.
Findings
Post-accident investigations identified melted aluminum spatters on the underside and leading edge of the left horizontal stabilizer. Additionally, investigators found concentrated fire damage within the cabin area situated behind the drain holes in the left wing root. Laboratory analysis of the pilot-rated passenger's blood and urine revealed the presence of tetrahydrocannabinol carboxylic acid. The aircraft had been out of service for two years prior to this event. The investigation noted fire damage consistent with the previously reported fuel leak.