AT72, vicinity Tyumen Russian Federation, 2012

AT72, vicinity Tyumen Russian Federation, 2012

Summary

On 2 April 2012, the crew of an ATR72-200 which had just taken off from Tyumen lost control of their aircraft when it stalled after the flaps were retracted and did not recover before it crashed and caught fire killing or seriously injuring all occupants. The Investigation found that the Captain knew that frozen deposits had accumulated on the airframe but appeared to have been unaware of the danger of not having the airframe de-iced. It was also found that the crew had not recognised the stall when it occurred and had overpowered the stick pusher and pitched up.

Description

On 2 April 2012, an ATR 72-201 being operated by UT Air on a domestic scheduled passenger flight from Tyumen to Surgut in day Visual Meteorological Conditions (VMC) departed controlled flight and crashed shortly after take off. Out of the 43 occupants, 29 passengers and all four crew members, were killed as a result of the impact and post crash fire and the other 10 sustained serious injuries.

Investigation

An Investigation was carried out by an Air Accident Investigation Commission established by the Interstate Aviation Committee (MAK). The Flight Data Recorder (FDR) and Cockpit Voice Recorder (CVR) were recovered and their data successfully downloaded. The Non Volatile Memory from the QAR was also recovered and the data contained in it extracted.

Evidence of frozen deposits was found on the upper surface of the right elevator shortly after the accident - see the illustration below.

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