Flight Planning and Crew
On 01.01.2011, the Tu-154B-2 aircraft with registration RA-85588 was scheduled to operate regular passenger flight 7K 348 from Surgut to Moscow Domodedovo. The airspace usage request had been submitted on 31.12.2010 for the flight on 01.01.2011. The flight assignment included 10 persons of the reserve crew, who, according to the Kogalymavia Airlines flight schedule, were to perform a flight to Turinsk.
Aircraft Preparation and Maintenance
Aircraft preparation for the flight took place before departure on 01.01.2011. Operational technical maintenance was performed on 01.01.2011 in the aircraft shop of the Kogalymavia Airlines engineering and aviation service under form A1+OV (departure support), work order No. 12 dated 01.01.2011. The pre-flight inspection in accordance with the flight manual requirements was carried out by the flight engineer, as evidenced by the signature in work order No. 12.
Fuel and Additive Details
The amount of TS-1 fuel with the addition of anti-icing fluid on board was 31,961 kg, which was sufficient for the flight along the route Surgut – Moscow (Domodedovo) taking into account the alternate airport Nizhny Novgorod selected by the crew. According to the Tu-154B flight manual section 4.3.2.0.(3).a, to prevent ice crystal formation in the fuel in the aircraft's fuel tanks, the refueled fuel must contain anti-icing fluid 'I-M' per OST 54-3-175-73-99 in the amount of 0.1+0.05% by volume of the refueled fuel. Laboratory analysis of fuel drained from the aircraft's fuel system showed that the amount of anti-icing fluid 'I-M' was 0.11%.
Occupants and Loading
On board the aircraft at departure from Surgut airport were 134 persons, including 8 crew members and 10 reserve crew members. The load was 1,137 kg, 87 seats. The taxi and takeoff weights of the aircraft were 97,232 kg and 96,732 kg respectively.