What happened
While performing an approach to Vitebsk, the crew of the aircraft lost control of the plane. The flight was traveling from Pskov to Vitebsk, transporting officers participating in a military exercise. During the descent, the aircraft lost altitude and collided with power cables before impacting an open field, where it caught fire.
The accident resulted in 26 fatalities among the occupants, though 5 passengers managed to survive the impact.
Findings
Investigations into the crash determined that the aircraft was operating in severe icing conditions at the time of the incident. The primary factor contributing to the loss of control was the excessive accumulation of ice across the wings, stabilizers, and the fuselage. It appears that the onboard deicing systems had not been activated by the crew during the approach.