Incident Overview
An aircraft traveling from Tyumen to Ufa experienced a fire warning light indicating smoke in the rear cargo compartment while cruising at 10,600 meters. The crew confirmed the presence of smoke but could not identify the source of the fire. Air traffic control cleared the crew to commence an emergency descent and divert to Pervouralsk Airport.
Final Approach and Crash
During the final approach to Pervouralsk Airport, the situation onboard deteriorated. The captain realized that the aircraft could not reach the runway and attempted an emergency landing in a snow-covered area. Upon touchdown, the aircraft bounced twice, struck irrigation equipment, lost control, and crashed 3 kilometers from the airport.
Casualties
The accident resulted in the deaths of four crew members and 23 passengers. All other occupants were rescued.
Probable Cause
According to the official investigation, the probable cause was a short-circuit in an electrical installation located in the rear compartment of the aircraft, caused by the overheating of a cable with faulty insulation.