Incident Overview
A scheduled passenger flight from Dhaka to Sylhet experienced a runway overrun after landing too far down a wet runway. The aircraft came to rest in a drainage ditch. The flight had been delayed for several hours due to poor weather conditions at the destination, including limited visibility, heavy rain, low ceiling, and strong winds.
Sequence of Events
Following an uneventful flight, the aircraft touched down too far along the runway, which was wet. Unable to stop within the remaining distance, it overran the runway and came to rest in a drainage ditch.
Injuries and Damage
Thirty passengers sustained slight injuries, while all other occupants escaped unhurt. Both pilots were seriously injured as the cockpit was trapped against an earth wall.
Investigation Findings
The official investigation determined that the crew failed to refer to the Precision Approach Path Indicators (PAPIs) and, following a wrong approach configuration, landed too far down the runway, reducing the landing distance available. Contributing factors included an improperly calibrated Instrument Landing System (ILS) that caused the aircraft to land about 900 feet past the runway threshold, an excessive approach height, touchdown speed 20 knots above the reference speed, low braking action due to a wet runway surface, aquaplaning, and the crew's failure to initiate a go-around procedure.