Narrative:The Yak-40 took off from Irkutsk Airport (IKT) at 22:29. While on approach the crew were given the weather information that was current at 23:15. The controller had not received more recent weather information, despite his requests. He knew the weather had deteriorated but he passed the older weather info on to the crew. On finals the flight entered an area with a wet snow storm, 1000 m visibility severe buffeting and wind gusts of 10-14 m/s. An intense downdraft caused the plane to contact trees. The airplane crashed and burned.
Loss of control
|Date:||Thursday 4 May 1972|
|Operator:||Aeroflot, East Siberia Civil Aviation Directorate|
|C/n / msn:|| 9040314|
|First flight:|| 1970|
|Total airframe hrs:||1667|
|Engines:|| 3 Ivchenko AI-25|
|Crew:||Fatalities: 4 / Occupants: 4|
|Passengers:||Fatalities: 14 / Occupants: 14|
|Total:||Fatalities: 18 / Occupants: 18 |
|Airplane damage:|| Destroyed|
|Airplane fate:|| Written off (damaged beyond repair)|
|Location:||1,2 km (0.8 mls) from Bratsk Airport (BTK) ( Russia)
|Phase:|| Approach (APR)|
|Nature:||Domestic Scheduled Passenger|
|Departure airport:||Irkutsk Airport (IKT/UIII), Russia|
|Destination airport:||Bratsk Airport (BTK/UIBB), Russia|
» Soviet Transports
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 Irkutsk Airport to Bratsk Airport as the crow flies is 485 km (303 miles).
This information is not presented as the Flight Safety Foundation or the Aviation Safety Networkĺs opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.