Primary finding
Probable cause
A partial loss of engine power due to the Number 8 cylinder head cracking and separating from the barrel.
Investigator assessment
Analysis narrative
During initial takeoff from a private airfield, the single-engine agricultural airplane experienced a substantial loss of engine power. The pilot was unable to restore engine power and performed a forced landing to a field. During the landing roll-out the airplane collided with a levy, nosed over, and caught fire. The pilot was able to egress the airplane uninjured before the airplane was consumed by the postimpact fire. The airplane had been fully fueled and loaded with applicant. An inspection of the engine revealed that the Number 8 cylinder assembly cracked through the spark plug holes, resulting in the cylinder head separating from the barrel in flight.
Source record
Factual narrative
During initial takeoff from a private airfield, the single-engine agricultural airplane experienced a substantial loss of engine power. The pilot was unable to restore engine power and performed a forced landing to a field. During the landing roll-out the airplane collided with a levy, nosed over, and caught fire. The pilot was able to egress the airplane uninjured before the airplane was consumed by the post-impact fire. The airplane had been fully fueled and loaded with applicant. An inspection of the engine revealed that the #8 cylinder assembly cracked through the spark plug holes resulting in the cylinder head separating from the barrel in-flight.