What happened
During the approach to Jeju Airport, the aircraft encountered severe weather characterized by heavy rainfall and turbulence caused by the passing typhoon 'Doug'. As the flight progressed on final approach, the crew deployed flaps to 15 and 20 degrees due to concerns regarding potential microburst and windshear conditions. During this phase, the co-pilot alerted the captain twice that the approach speed was 147 knots, which the captain acknowledged.
Despite these alerts, the aircraft maintained an altitude above the glide slope. The landing occurred approximately 1,773 metres beyond the runway threshold. Due to the wet condition of the runway surface, the aircraft could not decelerate within the remaining 1,227 metres of pavement. The aircraft type overran the runway at a speed of 104 knots, subsequently striking a concrete wall and military barracks. The impact caused the aircraft to burst into flames. All 160 occupants were evacuated from the wreckage, with seven injuries reported.
Findings
- The aircraft was operating in extreme weather conditions involving heavy rain and turbulence from a typhoon.
- The flight was performing a final approach with flaps deployed while managing suspected windshear.
- The aircraft landed significantly past the runway threshold while remaining too high on the glide path.