Conclusion finale en anglais:
3.2. Cause and Circumstances of the Accident
3.2.1. Cause of Accident
The immediate cause of the accident was the descent below the minimum descent altitude at an excessive rate of descent in weather conditions which prevented visual contact with the ground, as well as a delayed execution of the go-around procedure. Those circumstances led to an impact on a terrain obstacle resulting in separation of a part of the left wing with aileron and consequently to the loss of aircraft control and eventual ground impact.
3.2.2. Circumstances Contributing to the Accident
1) Failure to monitor altitude by means of a pressure altimeter during a non-precision approach;
2) failure by the crew to respond to the PULL UP warning generated by the TAWS;
3) attempt to execute the go-around maneuver under the control of ABSU (automatic go-around);
4) Approach Control confirming to the crew the correct position of the airplane in relation to the RWY threshold, glide slope, and course which might have affirmed the crew's belief that the approach was proceeding correctly although the airplane was actually outside the permissible deviation margin;
5) failure by LZC to inform the crew about descending below the glide slope and delayed issuance of the level-out command;
6) incorrect training of the Tu-154M flight crews in the 36 Regiment.
3.2.3. Conducive circumstances
1) incorrect coordination of the crew's work, which placed an excessive burden on the aircraft commander in the final phase of the flight;
2) insufficient flight preparation of the crew;
3) the crew‘s insufficient knowledge of the airplane's systems and their limitations;
4) inadequate cross-monitoring among the crew members and failure to respond to the mistakes committed;
5) crew composition inadequate for the task;
6) ineffective immediate supervision of the 36 Regiment's flight training process by the Air Force Command;
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depuis 2 ans alors que ces entrainements doivent etre faits tous les 4 mois pour que la personne conserve le droit de voler sur l'appareil.