Accident
Last updated: 24 May 2013
| Status: | Definitief |
| Datum: | 31 JAN 1971 |
| Type: | 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: | ? |
| Surgut Airport (SGC/USRR), Rusland |
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 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.
