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Date:Sunday 2 March 1986
Type:Silhouette image of generic AN24 model; specific model in this crash may look slightly different
Antonov An-24B
Operator:Aeroflot, Moscow Civil Aviation Directorate
Registration: CCCP-46423
MSN: 87304108
First flight: 1968
Total airframe hrs:31570
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:8 km (5 mls) N of Bugulma Airport (UUA) (   Russia)
Phase: Approach (APR)
Nature:Domestic Scheduled Passenger
Departure airport:Cheboksary Airport (CSY/UWKS), Russia
Destination airport:Bugulma Airport (UUA/UWKB), Russia
The no. 1 engine stopped and the propeller feathered 1 second following flap extension. The aircraft entered a left bank and turn and finally stalled and crashed 8 km short of the runway.

The aircraft operated on a flight from Moscow Bykovo Airport to Bugulma with an en route stop at Cheboksary.

Probable Cause:

CAUSE: Failure of the autofeather sensor electrical breaker caused the propeller to feather.


Loss of control

» ICAO Adrep Summary 1/88 (#44)
» 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 Cheboksary Airport to Bugulma Airport as the crow flies is 380 km (237 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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Antonov An-24

  • 1332 built
  • 96th loss
  • 55th fatal accident
  • 19th worst accident (at the time)
  • 30th worst accident (currently)
» safety profile

  • 43rd worst accident (at the time)
  • 68th worst accident (currently)
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