Accident
Last updated: 27 November 2014
Status:Definitief
Datum:zondag 31 januari 1971
Type:Silhouette image of generic AN12 model; specific model in this crash may look slightly different
Antonov 12B
Luchtvaartmaatschappij:Aeroflot, Tyumen Civil Aviation Directorate
Registratie: CCCP-12996
Constructienummer: 00347403
Bouwjaar: 1970
Motoren: 4 Ivchenko AI-20M
Bemanning:slachtoffers: 7 / inzittenden: 7
Passagiers:slachtoffers: 0 / inzittenden: 0
Totaal:slachtoffers: 7 / inzittenden: 7
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:14 km (8.8 mijl) van Surgut (   Rusland)
Fase: Nadering (APR)
Soort vlucht:Vracht
Vliegveld van vertrek:?
Vliegveld van aankomst:Surgut Airport (SGC/USRR), Rusland
Beschrijving:
Aileron oscillations coincided with flap extension. The crew misunderstood this as asymmetrical flap extension and retracted the flaps again. The airspeed had dropped to 172 knots. The aileron suddenly deflected then , causing a left roll. The aircraft undershot the runway.
The hinge moment reversal on the ailerons and subsequent loss of control was caused by icing.


Bronnen:
» Soviet Transports
» NTSB/AAR-96/02 (144)


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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.
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