Background
The crew departed Krasnoyarsk-Yemilianovo Airport on a night flight to Osh, Kyrgyzstan. En route, they were informed that landing in Osh was impossible due to low visibility caused by foggy conditions. The captain decided to divert to Bishkek-Manas Airport, where the aircraft landed safely at 0520 LT. As weather conditions seemed to improve at the destination, the crew left Bishkek bound for Osh some ninety minutes later.
Accident
On approach to Osh, vertical visibility was reduced to 130 feet when the aircraft struck runway 12 surface violently. Upon impact, the left main gear was sheared off. The aircraft slid for several yards, overran the runway, hit obstacles, and came to rest in a field 529 meters past the runway end. The left engine was detached and the right engine destroyed. All 154 occupants were evacuated; ten passengers were injured, six of them seriously. The aircraft was damaged beyond repair.
Investigation Findings
The investigation determined that the accident occurred in poor weather conditions with horizontal visibility reduced to 50 meters and vertical visibility limited to 130 feet. It was reported that the accident was caused by the combination of the following factors: the crew decided to leave Bishkek Airport for Osh without taking into consideration the weather forecast and the possibility of deteriorating weather; the captain's competences for a missed approach procedure in poor weather conditions were limited to simulator training despite being certified for Cat IIIa approaches; failure of the crew to comply with standard operating procedures for a missed approach; wrong actions by the pilot in command while crossing the runway threshold at a height of 125 feet and about five seconds after initiation of the TOGA procedure, disrupting the go-around trajectory and causing the aircraft to continue descent; lack of reaction from the copilot who did not try to correct the wrong actions; lack of concentration by the crew who failed to control approach speed and failed to recognize increasing pitch angle; possible somatogravic illusions caused by fatigue due to duty time above 13 hours; and a non-proactive crew reaction when the GPWS alarm sounded.