What happened
The pilot was operating an aircraft on a flight back to the home airfield after completing an aerial application mission. During the en route phase of the flight, the engine experienced a total loss of power. Unable to maintain altitude or reach the intended destination, the pilot executed a forced landing in an unharvested wheat field. The impact resulted in substantial damage to the airplane.
The investigation
Following the accident, investigators examined the aircraft to determine the cause of the power failure. The inspection revealed that the fuel tank vent line was obstructed by foreign material. This blockage prevented proper ventilation of the fuel tank, which likely led to a vacuum condition that restricted fuel flow to the engine.
Findings
The primary factor contributing to this accident was the foreign material blockage of the fuel tank vent line. This mechanical issue caused a fuel starvation event, leading to the complete loss of engine power during flight. The pilot's decision to land in an unharvested field was a necessary response to the sudden mechanical failure.
Safety message
Regular pre-flight inspections should include a thorough check of fuel system components, including vent lines, to ensure they are clear of debris or obstructions that could impede fuel flow.