What happened
The aircraft was engaged in agricultural operations when the incident occurred. During a pull-up maneuver immediately after spraying a field, the engine produced a loud bang. The pilot observed smoke and significant oil pouring from the engine compartment. Subsequently, the engine froze completely, leaving the pilot with no power. Unable to maintain altitude or reach a suitable airfield, the pilot was forced to execute an emergency landing in a wooded area, resulting in a collision with trees.
The investigation
Post-accident examination of the aircraft revealed critical mechanical failure within the powerplant. Investigators determined that cylinder number 7 had separated from the engine block. This structural failure was the primary indicator of catastrophic internal engine damage that led to the immediate loss of thrust.
Findings
The sequence of events indicates a sudden and total engine failure during a low-altitude phase of flight. The presence of smoke and oil leakage provided visual confirmation of mechanical distress, but the rapid progression to engine seizure left insufficient time for recovery. The decision to land in the trees was necessitated by the complete loss of propulsion after the spray run.