Crash of an Antonov AN-24B near Toguchin: 45 killed

Date & Time: Apr 1, 1970 at 0407 LT
Type of aircraft:
Antonov AN-24
Operator:
Registration:
CCCP-47751
Flight Phase:
Flight
Flight Type:
Scheduled Revenue Flight
Survivors:
No
Site:
Plain, Valley
Schedule:
Novosibirsk - Krasnoyarsk - Bratsk
MSN:
79901204
YOM:
1967
Flight number:
SU1661
Location:
Toguchin
Novosibirsk oblast
Country:
Russia
Region:
Asia
Crew on board:
5
Crew fatalities:
Pax on board:
40
Pax fatalities:
Other fatalities:
Total fatalities:
45
Aircraft flight hours:
3975
Aircraft flight cycles:
3832
Circumstances:
The aircraft departed Novosibirsk-Tolmachevo Airport at 0342LT and its crew was cleared to climb to 4,200 meters, altitude reached at 0353LT. At this time, the crew was cleared to continue to climb to the assigned altitude of 6,000 meters. Shortly later, while flying at an altitude of 5,400 meters, the airplane collided with a radiosonde weather balloon operated by the Hydrometeorological Service. The balloon struck the windshield and the nose cone and partially destroyed the cockpit. The airplane went out of control, entered a dive and partially disintegrated at the altitude of 2,000 meters before crashing in an open field located 20 km southeast of Toguchin. The airplane struck the ground at a speed of 300 km/h and was totally destroyed. All 45 occupants were killed. Some debris from the nose and the weather balloon were found more than 6 km from the main point of impact. The windshield was not recovered.
Probable cause:
In-flight collision with a radiosonde weather balloon while cruising by night. Apparently, the crew has not been informed about the presence of the weather balloon.

Crash of an Antonov AN-12B in Novosibirsk: 4 killed

Date & Time: Aug 12, 1969 at 2054 LT
Type of aircraft:
Antonov AN-12
Operator:
Registration:
CCCP-11018
Flight Phase:
Landing (descent or approach)
Flight Type:
Cargo
Survivors:
Yes
Site:
Plain, Valley
Schedule:
Mys Schmidta – Chokurdakh – Tiksi – Novosibirsk
MSN:
6 3 441 09
YOM:
1966
Flight number:
SU5134
Location:
Novosibirsk-Tolmachevo
Novosibirsk oblast
Country:
Russia
Region:
Asia
Crew on board:
6
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
4
Aircraft flight hours:
3172
Aircraft flight cycles:
1202
Circumstances:
The aircraft was completing a cargo flight from Mys Schmidta to Novosibirsk with intermediate stops in Chokurdakh and Tiksi, carrying a load of 9,9 tons of various equipments. After takeoff from Tiksi, the engine n°4 failed. The captain decided to continue on three engines to Novosibirsk as a landing at Tiksi Airport was not possible due to poor weather conditions. Following an uneventful flight, the crew started the descent to Tolmachevo Airport when all three remaining engines lost power. The airplane lost height, struck trees and crashed in a wooded area located 13 km from the airfield. Four crew members were killed while two others were injured. The aircraft was destroyed.
Probable cause:
It was determined that the fuel was contaminated with salt water (sea water) which also caused a serious corrosion of the fuel supply system.

Crash of an Ilyushin II-18D in Krasnoyarsk

Date & Time: Oct 20, 1968
Type of aircraft:
Ilyushin II-18
Operator:
Registration:
CCCP-75436
Flight Phase:
Landing (descent or approach)
Flight Type:
Scheduled Revenue Flight
Survivors:
Yes
Site:
Airport (less than 10 km from airport)
Schedule:
Novosibirsk – Yakutsk – Magadan
MSN:
186 0095 05
YOM:
1966
Location:
Krasnoyarsk
Krasnoyarsk Krai
Country:
Russia
Region:
Asia
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
On the leg from Novosibirsk to Yakutsk, the hydraulic pressure on engine number 2 dropped. The captain decided to divert to Krasnoyarsk Airport for an emergency landing. The approach was completed in snow falls and during the last segment, the four engine airplane was too low and struck the ground 200 meters short of runway threshold then crashed and burned. There were no casualties but the aircraft was destroyed.
Probable cause:
The cause of the loss of hydraulic pressure on engine number 2 remains unknown. However, the decision of the crew to divert to Krasnoyarsk Airport was wrong as the weather was considered as marginal. It would be preferable to divert to Kemerovo or Bratsk Airport where the weather conditions were considered as good.

Crash of an Antonov AN-12B in Novosibirsk: 6 killed

Date & Time: Jan 14, 1967 at 0625 LT
Type of aircraft:
Antonov AN-12
Operator:
Registration:
CCCP-04343
Flight Phase:
Takeoff (climb)
Flight Type:
Cargo
Survivors:
No
Site:
Airport (less than 10 km from airport)
Schedule:
Moscow – Sverdlovsk – Novosibirsk – Krasnoyarsk – Irkutsk – Khabarovsk
MSN:
8 9 006 05
YOM:
1959
Flight number:
SU5003
Location:
Novosibirsk-Tolmachevo
Novosibirsk oblast
Country:
Russia
Region:
Asia
Crew on board:
6
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
6
Aircraft flight hours:
4376
Aircraft flight cycles:
1698
Circumstances:
Less than two minutes after takeoff from Novosibirsk-Tolmachevo Airport runway 07, while climbing by night at an altitude of 200 meters, the airplane entered clouds when the crew informed ATC about an in-flight fire. The captain was cleared to return for an emergency landing when control was lost 24 seconds later. The airplane entered a nose-down attitude and struck the ground at a speed of 335 km/h in an open field located 3 km from the airport. The aircraft disintegrated on impact and debris were scattered on a distance of 552 meters. All six occupants were killed. The airplane was carrying various prefabricated goods for a total weight of 11,278 kilos.
Probable cause:
It was determined that a fire broke out in the cargo compartment during the takeoff procedure but investigations were unable to establish the exact origin of the fire.

Crash of a Tupolev TU-104B in Novosibirsk

Date & Time: Jun 9, 1964
Type of aircraft:
Tupolev TU-104
Operator:
Registration:
CCCP-42476
Flight Phase:
Landing (descent or approach)
Flight Type:
Scheduled Revenue Flight
Survivors:
Yes
Site:
Airport (less than 10 km from airport)
MSN:
0 2 13 04
YOM:
1960
Location:
Novosibirsk-Tolmachevo
Novosibirsk oblast
Country:
Russia
Region:
Asia
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
On final approach to Novosibirsk-Tolmachevo Airport, the crew encountered poor weather conditions and the captain decided to go around. A second attempt to land was made few minutes later. As the visibility seems to improve a bit, the captain decided to land. After touchdown on a waterlogged runway, the airplane was unable to stop within the remaining distance and overran. While contacting soft ground, the undercarriage were sheared off and the airplane came to rest. There were no casualties.
Probable cause:
The assumption that the accident was caused by an aquaplaning effect or an excessive speed upon landing was not ruled out.
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