What happened
While completing the spraying of a field, the pilot of the aircraft encountered an unsulated power rollback. In response to the loss of engine power, the pilot executed a forced landing into an alfalfa field. During the landing roll, the airplane struck a berm, which resulted in substantial damage to the aircraft.
The investigation
An inspection of the aircraft's fuel system was conducted following the accident. Investigators discovered that the fuel strainer was blocked with a black, rubber-like substance. To determine the source of the blockage, the fuel truck used to refuel the airplane was also inspected for contaminants. The investigation found that the same black, rubber-like substance present in the aircraft's fuel filter strainer was also present in the tank of the refueling truck.