Incident Description
The pilot of an aircraft requested that the fuel tanks be filled with 40 gallons of 100LL avgas. Instead, the lineman servicing the aircraft dispensed 40 gallons of Jet-A fuel. This resulted in a total fuel load of approximately 80 gallons, consisting of a roughly 50 percent to 50 percent mixture of avgas and Jet-A.
The pilot signed the fuel receipt, which clearly indicated that Jet-A fuel had been used, and then proceeded to depart. The lineman did not observe the pilot performing a preflight inspection before departure.
Power Loss and Forced Landing
Shortly after takeoff, both engines lost power. The pilot was forced to execute a landing in a field. No further details about the landing or the extent of damage were provided in the source.
Aircraft and Fueling Equipment
The aircraft was equipped with restricted fuel ports designed to prevent misfueling. However, the fuel pump from which aircraft N120JD was fueled was not fitted with the corresponding large-size nozzle intended to preclude such incidents.