Incident Overview
During a routine operation, the pilot reported having flown for approximately forty-five minutes on the current fuel load, with an estimated surplus of over one hour remaining. While executing the climb-out phase from the first swath run in a field, the engine suffered a complete loss of power. The pilot noted that black smoke was visible emanating from the exhaust at the moment the power failed.
Emergency Response
Faced with the sudden loss of propulsion, the pilot identified the only viable emergency landing area as being directly ahead of the aircraft's current trajectory. This decision dictated the immediate flight path following the mechanical failure.
Technical Examination
Following the accident, a detailed examination of the engine assembly was conducted. When investigators attempted to start the engine, it exhibited rough running characteristics and produced black smoke, mirroring the symptoms reported during the incident. Further diagnostic testing revealed that the fuel pressure supplied by the engine-driven fuel pump was failing to be maintained within the pressure carburetor.
Contributing Factors
A local mechanic assisting with the post-accident inspection indicated that such a loss of fuel pressure in the carburetor is typically associated with a defective needle assembly. Maintenance records provided by the operator showed that the engine assembly had accumulated 1,150 hours of service since its last overhaul. The recommended interval for engine overhauls is 1,200 hours. Additionally, the available maintenance documentation did not confirm whether the carburetor itself had been overhauled during the previous engine maintenance cycle.