What happened
During a local training mission operating out of Ulan-Ude Airport, an aircraft experienced a total loss of power across all four engines. While performing circling maneuvers in the area surrounding the airfield, the flight crew was unable to maintain control of the plane following the engine failures. The aircraft subsequently entered a stall and descended into a field situated approximately 4 km from the airport.
There were six fatalities among the crew members on board. No other injuries were reported.
Findings
Investigations into the accident determined that the primary reason for the loss of power was fuel exhaustion, which led to the simultaneous failure of all four engines during the flight.