What happened
The incident occurred during the initial climb phase following departure from Krasnoyarsk-Yemilianovo Airport. Shortly after liftoff, the aircraft experienced a stall and lost control. It subsequently impacted the ground with significant force, resulting in a large explosion. The wreckage struck a stationary Ilyushin Il-4 (c/n 7116) that was parked nearby. Both the active PS-84 and the parked Il-4 were completely destroyed in the collision and subsequent fire.
All 30 occupants of the PS-84 perished in the accident. The manifest consisted of ten civilians, along with Soviet military personnel including pilots and engineers. These individuals were traveling to Ladd Army Air Field near Fairbanks for the purpose of accepting delivery of American bomber aircraft intended for transfer to the Soviet Air Force.
Findings
Official investigations determined that the loss of control immediately after takeoff was attributed to specific operational and environmental factors. The primary contributing element was an excessive accumulation of ice on the airframe, wings, and elevators. This condition was compounded by the fact that the aircraft was being operated beyond its maximum takeoff weight (MTOW).