Incident Overview
During cruise flight, the aircraft's engine experienced a loss of power accompanied by severe vibration. The pilot attempted to remedy the issue but was unsuccessful, leading to the decision to execute an emergency landing in a marsh.
Landing and Post-Impact
Shortly after touchdown, the aircraft bogged down in the soft terrain and nosed over. The precise extent of damage to the aircraft was not detailed in the investigation report.
Engine Examination
A teardown examination of the engine was conducted following the incident. The examination revealed that the engine had sustained an internal failure in the area of the #1 and #2 cylinders. While the exact mode and sequence of the failure could not be identified, investigators observed evidence of inadequate lubrication within the engine.
Investigation Findings
The investigation confirmed the internal failure and noted the presence of inadequate lubrication, though the specific chain of events leading to the failure remained undetermined.