What happened
During an approach toward Ononge, the flight crew encountered deteriorating weather conditions. In response to the low visibility, the decision was made to redirect the flight to Yongai Airfield, situated approximately 27 km northeast of their original destination.
While the twin engine aircraft was maintaining a cruising altitude of 2,286 metres within cloud cover, it impacted the slope of a mountain. Emergency responders were unable to reach the crash site until one day after the impact occurred.
The accident resulted in two fatalities, involving both pilots on board. One crew member, the loadmaster, sustained serious injuries during the collision.
Findings
Investigations into the accident identified that the flight was operating in obscured conditions at the time of the impact. The primary factor contributing to the crash was controlled flight into terrain.