What happened
The operator of the aircraft reported that the pilot was engaged in agricultural work, specifically spraying seeds across a farm field. During this operation, the engine experienced a sudden failure. In response to the loss of power, the pilot attempted to maneuver the aircraft toward a nearby field for an emergency landing. However, the aircraft collided with a canal ditch before a successful landing could be achieved.
The investigation
Following the accident, a postaccident examination of the engine was conducted to determine the mechanical cause of the failure. The inspection revealed significant damage to the internal components. Specifically, investigators found a crack in the number 8 cylinder head. This fracture extended from one spark plug hole directly to the other spark plug hole, indicating a structural failure within that specific cylinder.
Findings
The investigation identified the mechanical defect as the primary factor in the loss of engine power. The crack in the number 8 cylinder head compromised the integrity of the combustion chamber, leading to the cessation of engine operation while the aircraft was airborne over agricultural land.