Khabarovsk Krai

After departure from Khabarovsk-Novy Airport, the crew was cleared to climb to the altitude of 4,000 meters. Once this altitude was reached, ATC cleared the crew to continue to climb to 8,000 meters. While climbing to the altitude of 4,500 meters, the copilot was able to send a brief distress call, reporting severe vibrations and that control was lost. The airplane entered a dive and eventually crashed in a 50-60° nose-down attitude in a huge explosion some 15 km southwest of the village of Kurun, some 96 km northeast of Khabarovsk. The aircraft disintegrated on impact and all 86 occupants were killed.

The crew was completing a positioning flight from Nikolayevsk-on-Amur to Magadan with an intermediate stop at Okhotsk. En route, pilots encountered poor weather conditions with turbulences and heavy icing conditions. The airplane lost altitude and eventually dove into the ground before crashing in flames at an altitude of 900 meters on the slope of Mt Dzhugdzhur (1,207 meters high) located in the region of Enken. The burned wreckage was found five days later and all five crew members were killed. At the time of the accident, weather conditions were bad with low visibility, snow falls, severe icing conditions, turbulences, wind from 140° at 100 km/h and an OAT of -18°.

The aircraft departed Uchur in the morning on a supply mission to a geological camp located in the region of the Kovrik River. The crew successfully performed a first drop and continued along the Kovrik Valley in an attempt to make a second low pass. While cruising at low height, the captain realized he was too low and elected to return, made a sharp turn to the left when control was lost. From a height of about 20-25 meters, the aircraft bank left, stalled and crashed 1,900 meters from the drop zone. The aircraft was destroyed upon impact and all nine occupants were killed.

The crew was apparently involved in an aerial photo mission when the left engine caught fire in flight. The pilot reduced his altitude and attempted an emergency belly landing in the tundra. The aircraft came to rest about 82 km southeast of Sukpay, near the Aksu River, in the Sikhot-Alin Mountain Range. There were no casualties but the aircraft was damaged beyond repair.
Sources & photos:
http://aleonkin.livejournal.com/341110.html
https://napev.livejournal.com/201959.html

Approaching Khabarovsk in limited visibility, the crew lost his orientation and continued to the south. Few minutes later, in poor weather conditions, the crew did not realize his altitude was too low. While cruising at an altitude of 850 meters, the aircraft struck the slope of a mountain (1,050 meters high) located in the Lazo district, about 145 km southeast of Khabarovsk. The aircraft disintegrated on impact and all 28 occupants were killed.

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.

The crew was engaged in a local training flight. Shortly after takeoff from the Znamenskoye airbase in Sovietskaïa Gavan, while climbing, the pilot in command made a turn to the right to 15-20° to avoid a mountain on its left. Shortly later, while at a height of 340 meters, he completed a 90° turn to the left when the aircraft hit tree tops and crashed in a wooded area located on the southwestern slope of the Mt Kekurnaya. Both pilots were killed while all four other crew members were injured. The aircraft was totally destroyed.
Crew:
Maj Nikitin Mikhail Zuev, pilot,
Cpt Alexei Ivanovich, copilot,
Grigory Mikhaïlovitch Kuznetsov, navigator,
Zagidulin Fatkulbayan,
Hakimovich Popov,
Fedor Ivanovitch,
Grigoryi Evhen.

During the takeoff roll, the aircraft veered off the center line to the right as the rudder trim has not been set to neutral position before takeoff. The crew failed to abort the takeoff procedure and about 30 seconds after liftoff, during initial climb, the right wing hit a telegraph line and collided with the pole of a high voltage power line. Out of control, the aircraft stalled and crashed. The mechanic was killed while 13 other occupants were injured. The aircraft was destroyed.

On final approach, the visibility was poor due to severe weather and as the aircraft was too low, it hit with its right wing a radio antenna located 2,600 meters short of the runway threshold. The aircraft stalled and crashed in a huge explosion, killing all 22 occupants.

The floatplane departed Khabarovsk on a flight to Aleksandrovsk-Sakhalinski with an intermediate stop in Nizhnetambovskoye, carrying three passengers, four crew members and a load of 460 kilos of mail. About an hour after departure from Nizhnetambovskoye, while in cruising altitude, the pilot noted a leak on the right engine, between cylinders n°7 and 8. Shortly later, the right engine stopped and the crew decided to attempt an emergency landing on the Amur River. At the time of the accident, the water was glassy and upon landing some 700 metres offshore, the airplane crashed, overturned and sank. All four crew members were rescued by fishermen while all three passengers drowned.