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Last updated: 18 November 2018
Statuts:Enquête Officielle
Date:mardi 22 août 2006
Heure:15:39
Type/Sous-type:Silhouette image of generic T154 model; specific model in this crash may look slightly different
Tupolev Tu-154M
Compagnie:Pulkovo Aviation Enterprise
Immatriculation: RA-85185
Numéro de série: 91A894
Année de Fabrication: 1991
Heures de vol:24215
Moteurs: 3 Soloviev D-30KU-154-II
Equipage:victimes: 10 / à bord: 10
Passagers:victimes: 160 / à bord: 160
Total:victimes: 170 / à bord: 170
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:45 km (28.1 milles) NW of Donetsk (   Ukraine)
Phase de vol: En vol (ENR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Anapa Airport (AAQ/URKA), Fédération de Russie
Aéroport de destination:Saint Petersburg-Pulkovo Airport (LED/ULLI), Fédération de Russie
Numéro de vol:FV612
Détails:
Pulkovo flight 612 departed Anapa (AAQ) for St. Petersburg (LED) at 15:05. The Tu-154M climbed to the cruise altitude of 35,100 feet (10.700 m). Because of storm cells ahead, the pilot decided to change course laterally by 20 km and attempted to climb over the storm cells. However, the thunderstorm front was unusually high, extending up to 15 km (49,000 feet). The Tu-154 entered an area of severe turbulence, pushing up the airplane from 11.961 m to 12.794 m within just 10 seconds. The angle of attack increased to 46 degrees and the airspeed dropped to zero. It entered a deep stall from which the crew could not recover. The plane crashed and burned in a field.

Probable Cause:

The cause of the crash was the loss of control in the manual flight mode with supercritical angles of attack, causing a stall with the subsequent transition to a flat spin and collision with the ground with a large vertical velocity. Factors were considered poor crew coordination, and failure to follow the instructions in the Aeroplane Flight Manual to prevent a stall. Also, the crew training methods used were insufficient to demonstrate the dangers of manual flight at high altitudes.

Accident investigation:
cover
Investigating agency: MAK
Status: Investigation completed
Download report: Final report

Sources:
» 'Climb over storm' doomed Tu-154 (Flight 05/09/06)
» RIA Novosti
» MAK Interstate Aviation Committee (IAC)


Photos

photo of Tupolev Tu-154M RA-85185
photo of Tupolev Tu-154M RA-85185
photo of Tupolev Tu-154M RA-85185
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Plan
Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Anapa Airport et Saint Petersburg-Pulkovo Airport est de 1700 km (1062 miles).
Accident location: Global; accuracy within tens or hundreds of kilometers.

Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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Tupolev Tu-154

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