Investigation Summary
Flight B-608 was a scheduled domestic flight from Irkutsk to Bratsk. As the Yakovlev Yak-40 approached Bratsk, the region was experiencing turbulent weather conditions caused by the passage of a vigorous cold front. The encounter with intense downward air currents began approximately 9 kilometers from the runway. These atmospheric conditions led to a rapid, uncontrolled descent that the crew could not arrest. The aircraft impacted the ground in a wooded area 1,250 meters from the runway threshold, broke apart, and caught fire.
Final Conclusions
The investigation concluded that the primary cause of the accident was the encounter with intense downdrafts and significant wind shear during the final approach. These meteorological phenomena were localized and associated with a passing cold front, exceeding the aircraft's performance capabilities at low altitude.
Video Analysis
No video analysis linked for this case file yet.
Interesting Facts
- 01The aircraft was a Yakovlev Yak-40, registration CCCP-87778, manufactured in 1970.
- 02Weather at the time of the accident included wet snow, visibility of 1,000 meters, and wind gusts up to 14 m/s.
- 03The aircraft encountered a microburst that caused a sudden loss of altitude that the crew could not recover from at low height.
- 04The crash site was located 1,250 meters from the runway threshold and 230 meters to the left of the centerline.
- 05All 14 passengers and 4 crew members perished in the accident.
Location
ACCIDENT SITE · Coordinates taken from the entered by an editor.