What happened
Prior to departure, the pilot instructed a lineman to service the aircraft with 50 gallons of 100LL aviation gasoline. Following the refueling process, the pilot performed a routine check by draining the fuel sumps. During this procedure, the pilot observed that the fuel was clear and blue in color, though it still possessed a characteristic gasoline odor.
Shortly after takeoff, both engines experienced a loss of power. The pilot attempted to return to the airport but was unable to maintain flight, subsequently performing an intentional wheels-up forced landing.
The investigation
Investigations involving both the fixed base operator and the lineman revealed that the aircraft had been inadvertently serviced with Jet-A fuel instead of the requested 100LL gasoline. It was noted that the fuel truck used for the servicing was not equipped with a specialized Jet-A nozzle; instead, it utilized a straight tip nozzle to complete the refueling.