Accident Overview
While descending to Rajshahi Airport, the left engine of the aircraft failed. The airplane subsequently stalled and crashed in a field located a few kilometers short of the runway threshold. The aircraft was destroyed, and all four crew members on board were killed.
Engine Failure Sequence
The left engine failure occurred during the descent phase. Following the loss of power on the left side, the aircraft entered a stall condition and was unable to recover before impact. The exact altitude and speed at which the stall occurred are not specified in the report.
Probable Cause
According to the official investigation findings, the probable cause of the accident was the failure of the pilot to take proper emergency action and indiscretion exercised following the failure of the port (left) engine due to fatigue. Additionally, the loss of power due to overheating and malfunctioning of the starboard (right) engine, including the blowing off in air of its three cylinder heads during prolonged single-engine flight with the aircraft fully loaded, contributed to the accident sequence.