Final report published (in Russian).
http://www.mak.ru/russian/investigat...t_ra-65691.pdf
"The reason for the crash of the Tu-134A RA-65 691 during the approach in the conditions worse than weather minimums of the airfield, aircraft and Captain, was the failure of the crew to make the decision to go-around and descending the aircraft below the minimum safe altitude in the absence of visual contact with approach lights and landmarks, which led to a collision with the trees and the ground in controlled flight.
Contributing factors were:
- Poor communication in the crew and resource management (CRM) from the Captain in the performance of the approach, which expressed in the subordinance of the Captain to the navigator's instructions, who was in a mild degree of alcoholic intoxication, and the missing of any activity of the FO on the final stage of the emergency flight.
- Flight navigator being in a state of mild intoxication.
- Unjustified weather forecast 18:00 06/20/2011 03:00 06/21/2011 and the forecast for landing from 19:00 to 21:00 06/20/2011 by height of cloud, visibility and severe weather - fog, as well as the discrepancy transferred to the crew for 30 or 10 minutes before the landing of the weather at the airport Petrozavodsk actual weather that occurred at the time of SARS in the OMB-LMM INC = 12 °.
- The failure of the crew to check the ARC and other devices for integrated control of aircraft on final, while using information navigator satellite navigation system KLN-90B (in violation of the Flight Manual Supplement for the Tu-134 (see Section 4, paragraph 0.11)). "