Accident Summary
A agricultural application flight experienced an engine power loss shortly after takeoff. The pilot performed a forced landing in an open field, and the aircraft subsequently came to rest in a ditch. At the time of the accident, the aircraft was carrying herbicide.
Engine History and Examination
The engine had accumulated approximately 17 hours of operation since a factory overhaul and had been installed on the accident aircraft for two months prior to the event. An on-scene inspection of the engine established continuity of the mechanical and valve train components. Investigators obtained thumb compression in the proper firing order.
Post-Accident Findings
A teardown inspection of the engine and propeller revealed no discrepancies. Bench tests of the fuel system and ignition system showed operation within specified parameters. Despite the power loss, no mechanical or system anomalies were detected during the investigation.
Conclusion
No probable cause for the engine power loss was determined based on the examinations and tests conducted.