On 27 September 1954, the Ilyushin Il-12 operating the route crashed near Severny Airport after it struck trees.
The visibility was forecast as 4–10 km (2.5–6.2 mi; 2.2–5.4 nmi) at the time of takeoff.
[1] Despite a warning being received by the station at 00:12 that the airport was covered in fog and had poor visibility, the forecaster on duty reported the weather conditions to the crew at 00:25.
Without sighting the ground, the pilot-in-command continued the approach, with permission from the air traffic controller, and descended below the decision height.
At 00:57, the Il-12 struck trees and crashed into a wooded area near the airport, killing all 29 occupants onboard.