Russian federal air transport authority Rosaviatsia has clarified that an audit of carrier Aeroflot-Nord found the airline's operations were in line with certification requirements, following allegations in the media over standards at the company.
New Rosaviatsia chief Gennady Kurzenkov has issued the statement to defuse suggestions in the media that "shortcomings" identified during the audit were linked to the fatal loss of a Boeing 737-500 at Perm in September.
Kurzenkov says that while "irregularities" were found in certain documents, the inspection concluded in October that organisation of operations and flight safety at Aeroflot-Nord corresponded to federal civil aviation requirements.
Aeroflot-Nord says that media reports, based on interpretation of Rosaviatsia comments, had alleged that crews had submitted falsified documentation.
The airline insists that its crews were professionally trained in accordance with Russian federal regulations, and stresses that the inquiry into the 14 September accident has not reached any conclusions.
Russia's Interstate Aviation Committee (MAK), which is heading the investigation, says it is working on mathematical modelling of the final stages of the flight, and preliminary assessment of a simulation will take place in early December.
MAK says it is examining the level of training of the crew, and the technical condition of the aircraft during the emergency, and their effect on the outcome.