What happened
The aircraft was operating in cruise flight when the engine suddenly quit. The pilot attempted to execute an emergency landing on a nearby beach but was unable to avoid impact with the water, resulting in a crash.
The investigation
Recovery of the aircraft was delayed, and the engine was not located for several days after the accident occurred. Due to this delay, salt water damage prevented any meaningful mechanical analysis of the shaft failure.
Findings
According to the operator, the engine failure was attributed to a broken crankshaft. The inability to analyze the specific cause of the breakage was directly linked to the corrosion caused by submersion in salt water.