Primary finding
Probable cause
Loss of engine power as a result of a complete piston failure.
Investigator assessment
Analysis narrative
The pilot was making an aerial application when he experienced a complete loss of power. He made a forced landing in a potato field. The airplane nosed-over during landing rollout. The investigation revealed that the number 6 piston rod retaining pin boss on the underside of the number 6 piston had failed.
Source record
Factual narrative
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