Incident
The aircraft was flying along the valley of the river Tikhon-Yuryakh when it encountered low clouds and poor weather conditions. The crew decided to return, but this decision was made too late to clear the obstacles. The aircraft struck tree tops and crashed into a mountain slope at an elevation of 1,080 meters, near the Moma Pass (which is 1,444 meters high). The accident site was located 19 kilometers northeast of Chumpu-Kytyl (Tyubelyakh). The impact forces and a post-impact fire destroyed the aircraft.
Casualties
The second pilot and five passengers were killed. The pilot and one passenger sustained injuries.
Probable Cause
The probable cause, as determined by the official investigation, was a consequence of wrong decisions taken by the crew, poor flight preparation, and insufficient or erroneous information about enroute weather conditions.