What happened
During a long-distance flight over the ocean, approximately two hours after departure, the pilot of the aircraft noticed an audible change in the engine's operation. This was accompanied by unstable torque readings on the cockpit instruments. Shortly after these indications appeared, the engine suffered a total failure, leaving the aircraft without propulsion.
Following the loss of power, the pilot declared an emergency and attempted several procedures to identify the malfunction and successfully restart the engine. These efforts were unsuccessful. The aircraft eventually ditched in the ocean at a location approximately 175 miles away from the nearest coastline, in waters with a depth exceeding 5,000 feet. The wreckage of the aircraft was not retrieved following the incident.
Findings
- The engine experienced a sudden loss of power following abnormal noise and torque fluctuations.
- The cause of the engine failure remains undetermined as the aircraft was not recovered.