Twin-Engine Aircraft Collision with Mountain Slope Near Ononge (P2-MBA)

Incident Overview and Diversion Decision During a descent toward Ononge, the flight crew encountered adverse weather conditions. As a result, the crew elected to divert to Yongai Airfield, which is situated approximately 27 kilometers northeast of Ononge. ## Collision and Casualties Shortly after the diversion decision, the twin-engine aircraft was cruising at an altitude of 2,286 meters while in cloud cover. The aircraft subsequently struck the slope of a mountain. Rescue personnel did not arrive at the scene until one day after the accident. The loadmaster sustained serious injuries, while both pilots were killed. ## Official Findings The official investigation determined that the probable cause of the accident was controlled flight into terrain.