ASN Aircraft accident Yakovlev Yak-40 CCCP-87437 Sverdlovsk-Koltsovo Airport (SVX)
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Date:Saturday 7 October 1978
Type:Silhouette image of generic YK40 model; specific model in this crash may look slightly different
Yakovlev Yak-40
Operator:Aeroflot, Kazakstan Civil Aviation Directorate
Registration: CCCP-87437
MSN: 9431335
First flight: 1974
Total airframe hrs:6291
Engines: 3 Ivchenko AI-25
Crew:Fatalities: 4 / Occupants: 4
Passengers:Fatalities: 34 / Occupants: 34
Total:Fatalities: 38 / Occupants: 38
Aircraft damage: Destroyed
Aircraft fate: Written off (damaged beyond repair)
Location:7,5 km (4.7 mls) SW of Sverdlovsk-Koltsovo Airport (SVX) (   Russia)
Phase: Initial climb (ICL)
Nature:Domestic Scheduled Passenger
Departure airport:Sverdlovsk-Koltsovo Airport (SVX/USSS), Russia
Destination airport:Kostanay-Narimanovka Airport (KSN/UAUU), Kazakhstan
The Yak-40 operated on a domestic flight from Sverdlovsk (now named Yekaterinburg) to Kostanay and Dzhambul. The aircraft took off at 19:48:30 hours local time in darkness.
Throughout the flight, the engine thrust was insufficient. The aircraft climbed at a very shallow angle. At 19:50:25, at an altitude of just 100 m, the flight crew reported the failure of engine no.1. The flight crew turned left in an effort to return to the airport.
The aircraft struck trees on a hillside, 86 m above airfield elevation, and crashed.

It was determined that the crew failed to select engine anti-ice before takeoff. Additionally the maximum take-off weight of the aircraft was exceeded by 419 kg.


Controlled Flight Into Terrain (CFIT) - Mountain

» Soviet Transports


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This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Sverdlovsk-Koltsovo Airport to Kostanay-Narimanovka Airport as the crow flies is 427 km (267 miles).
Accident location: Approximate; accuracy within a few kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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Yakovlev Yak-40

  • 1136 built
  • 31st loss
  • 15th fatal accident
  • 2nd worst accident (at the time)
  • 5th worst accident (currently)
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  • 33rd worst accident (at the time)
  • 68th worst accident (currently)
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