Russia's
Interstate Aviation Committee (MAK) was ordered to investigate the crash. Contributing parties of the investigation were Russia's
Federal Service for Supervision of Transport (Rostransnadzor) of the
Ministry of Transport,
Federal Air Transport Agency (Rosaviatsiya), Rosaeronavigatsiya, representatives from Irkutsk Airport,
Aeroflot and S7 Airlines. As the manufacturer of the aircraft, Airbus sent a team of experts to assist in the investigation.
French BEA,
U.S NTSB and
German BFU were also appointed as accredited representatives.
Pratt & Whitney also assisted in the investigation of the crash. Both recorders were sent to Moscow on 10 July for decryption. The data from both recorders was successfully downloaded in good quality. Irina Andrianova, a spokesperson for the
Ministry of Emergency Situations, said, "The aircraft veered off the runway on landing. It was travelling at a terrific speed." News agencies reported that the pilots advised air traffic controllers they had landed successfully, but that radio contact then broke off suddenly. Russian prosecutors reported that the crash was most likely had been caused by human error or equipment failure. Speaking before flying from Moscow to Irkutsk, Russian Transport Minister
Igor Levitin was quoted as saying the runway was wet after rain and that a technical failure should be considered as one of the causes of the crash. According to Airbus, the aircraft was properly maintained. The most recent
A Check, or maintenance check, on the aircraft was on 1 June 2006, Sibir said. A
C Check, which involves a more thorough overhaul, was carried out 12 July 2005 in Frankfurt.
Faulty aircraft In the immediate aftermath, the cause of the crash of Flight 778 was unofficially attributed to some sort of mechanical errors, with the brakes in particular as the most frequently cited and scrutinized by the media. A total of 57 recommendations were issued by the MAK, which were aimed to Russian aviation authorities, S7 Airlines, Airbus, EASA and other certifying authorities,
IATA,
ICAO, and Domodedovo Airport. Among the recommendations were calls from the investigators to discontinue the use of thrust reverser altogether if the other one was in faulty condition, to ease the customs on importing spare parts, to pay more attention towards the possibility of accidental movement of an aircraft's thrust lever, and to create a specific procedure for engaging reverse thrust. MAK also issued a request to ICAO regarding the implementation of a video camera inside the cockpit. == Aftermath ==