What happened
During a cargo operation from Tokyo-Narita Airport to Bangkok, the crew encountered mechanical difficulties involving the third engine. The issue originated from a worn carbon seal in the number six position, which led to a reduction in lubrication levels. In response to this technical failure, the flight crew received authorization to perform an emergency return to the departure airport.
At the time of the landing attempt, environmental conditions were poor, characterized by heavy rain, fog, and limited visibility. While attempting an approach to runway 16, the aircraft type maintained an excessive altitude, crossing the runway threshold at approximately 500 feet. The descent continued until the aircraft made contact with the surface 1,700 meters beyond the threshold, where it experienced a bounce.
Following the touchdown, the crew engaged reverse thrust on engines one, two, and four. During this maneuver, the plane drifted off the runway and collided with a manhole, which caused the collapse of the nose landing gear. The aircraft sustained damage that rendered it a total loss. There were no injuries among the three crew members on board.
Findings
Investigations into the accident identified several contributing elements related to the flight's conclusion. The operational environment was marked by unfavorable weather and low visibility. Key factors included an inappropriate runway selection relative to the prevailing wind components, an incorrect approach configuration, a failure to execute a go-around procedure, and a misunderstanding of air traffic control instructions.