Summary
An agricultural airplane conducting aerial application operations experienced an engine malfunction during flight. The engine began backfiring and subsequently lost all power. The pilot executed a forced landing in a plowed field, during which the airplane flipped forward and came to rest inverted.
Narrative
The airplane was being operated as an agricultural aircraft when the engine started backfiring and then quit. The pilot performed a forced landing in a plowed field. During the landing, the airplane flipped forward to the inverted position.
Investigation Findings
Post-accident investigation revealed that the teeth on the left magneto were all broken off. No other causal factors were identified. The aircraft was repaired on site: a new magneto and a new propeller were installed. After a ground run, the engine operated normally. The rudder was also replaced, and the airplane was subsequently flown out of the field.
Aftermath
The aircraft will be returned to service following replacement of the engine. No injuries or fatalities were reported in the source.