Status: | Accident investigation report completed and information captured |
Datum: | zondag 31 januari 1971 |
Type: | Antonov An-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) N of Surgut Airport (SGC) ( Rusland)
|
Fase: | Nadering (APR) |
Soort vlucht: | Vracht |
Vliegveld van vertrek: | Tyumen-Roschino International Airport (TJM/USTR), Rusland |
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.
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Soviet Transports» NTSB/AAR-96/02 (144)
Foto's
Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft
niet de exacte vliegroute weer.
De afstand tussen Tyumen-Roschino International Airport en Surgut Airport bedraagt 645 km (403 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.