Date & Time: Dec 9, 1955 at 1207 LT
Type of aircraft:
Scheduled Revenue Flight
Yuzhno-Sakhalinsk – Sovietskaya Gavan – Elabuga – Khabarovsk
2 34 433 06
Crew on board:
Pax on board:
Aircraft flight hours:
After his departure from Sovietskaya Gavan Airport, the crew obtained the permission to continue at the assigned altitude of 2,700 meters. Weather conditions deteriorated enroute with clouds, turbulences and high winds blowing from the north up to 90 km/h. While overflying the Sikhote-Alin Mountain Range, the aircraft encountered downdrafts and lost altitude. The crew increased engine power and elected to gain height but the aircraft continued to descent until it struck the slope of Mt Tordoki-Yani (1,750 meters high). The wreckage was found on December 21, 1955 and all 21 occupants have been killed. It was reported that the aircraft struck the mountain 20 meters below the summit.
Severe downdraft in altitude caused the aircraft to lose height and to struck the mountain.