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Plane crash AN-12B near Surgut. 1971
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Plane crash AN-12B near Surgut. 1971

Plane crash AN-12B near Surgut, Tyumen CAA

  • Date of the crash: 31.01.1971, the
  • The time of the crash: 04: 41
  • Country of the crash: the USSR
  • Place the crash: Tyumen Region, Khanty-Mansi Autonomous, 13,6 km north of Surgut Airport
  • Type of aircraft: An-12B
  • Registration of aircraft: CCCP12996
  • Name of air carrier Aeroflot (USSR)
  • Division: Tyumen CAA, 2-th of Tyumen

Chronology of events: The plane crashed into the ground at 13,6 km north of Surgut airport with a huge left bank, collapsed completely burnt. Part of the debris was found at the bottom of the lake under ice. The tail half-sunk in an inverted position in the lake. The crew in the process of stalling tried to derive from a sharp decline by taking over the steering wheel with an overload of 1,8-1,9. In flight conditions, at which abnormal signs of the aircraft's behavior began to appear, the lift factor was equal to 0,96, that is, the overload margin to stall with a clean wing was 0,7. Therefore, the stalling took place due to a significant stiffening of the bearing properties of the wing as a result of distortion of the profile by deposition on the toe of the wing of the ice.

Data on victims:

  • Total on board were people 7: 6 1 crew members and passengers. Total killed 7 people: crew 6, 1 passengers.
Details of the crash:
  • Phase of flight: the approach
  • Identify the causes of the crash: the shortcomings in the design, weather conditions
Data on the plane:
  • aircraft Brand: An-12B
  • Aircraft ID: CCCP-12996
  • Country where registered aircraft: the USSR
  • Date of manufacture of the aircraft: 31.08.1970
  • Serial number of the aircraft: 00347403
  • Hours aircraft: 391
  • Engines: N 2026158 2036204 H H H 2026171 2026166
Flight data:
  • Tour type: Truck
  • The aviation company Aeroflot (USSR)
  • Division: Tyumen CAA, 2-th of Tyumen
  • The country, which was registered aviation company: USSR
  • Flying from: Tyumen (Roschino)
  • Flying in: Surgut
  • Original item: Tyumen (Roschino)
  • A final point: Surgut

Additional information:

Information about the crew:
  • KBC Konstantin Adamovich 
  • the co-pilot Viktor Ponomarev
  • navigator Nikolai Mikhailovich Evlantev
  • flight engineer Yuri A. Isakov
  • radio operator Anatoly Sergeyevich Andreyev
  • Flight Evgeny V. Trifonov

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