Narrative:The aircraft was making an ILS approach to runway 31 during a heavy rainstorm. The captain was busy seeking visual contact with the ground and didn't notice the descend through the minimum altitude of 415 feet. The co-pilot, who was flying the aircraft, made an abrupt heading change (while already 80 feet below the glide slope) and was possibly caught by downdraft, causing the aircraft to enter a high rate of descent and a crash into the sea short of the runway.
PROBABLE CAUSE: "a) The pilots did not adhere to the Thai Airways procedure for a 'captain monitored' approach in bad visibility; b) The captain did not monitor the approach adequately; c) The co-pilot mishandled the aircraft after descending below minimum altitude; downdrafts may be contributed to the height loss which resulted from this mishandling."
» ICAO Circular 88-AN/74 Volume II (179-200)
Official accident investigation report
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not
display the exact flight path.
Distance from Taipei-Sung Shan Airport to Hong Kong-Kai Tak International Airport as the crow flies is 804 km (502 miles).