What happened
While performing an aerial application maneuver, the pilot of the aircraft experienced a partial loss of engine power. Due to the loss of power, the pilot was forced to perform a forced landing into an adjacent field. The occupants were not injured during the event.
The investigation
A post-crash inspection of the engine was conducted to identify any potential mechanical issues. Investigators found no evidence of a mechanical failure or malfunction. However, a "fuzzy" substance was discovered on the back side of the fuel manifold screen. This substance partially covered the screen in an area where fuel would naturally concentrate and appeared to have been present for an extended period. Investigators were unable to determine the exact nature of this substance or whether it had any influence on the engine's operation. Records indicated that the airplane had been frequently operated at full power settings during previous flights without any noted problems.