What happened
The incident involved an aircraft operated by the Soviet Ministry of Internal Affairs (MVD). The plane was conducting a logistical supply mission for an expedition named 'Zheldorproyekt'. During the segment of the journey traveling from Salekhard to Abez, the crew encountered poor weather conditions while cruising.
Under these circumstances, the aircraft struck the slope of Mt Raiiz within the Polyarnyy Ural Mountain Range. The impact resulted in the loss of all lives on board, with 19 occupants killed. Due to the remote location and conditions, the wreckage was not located until several weeks after the accident, in January 1949.