Commission of the Interstate aviation Committee (MAK) examined the flight data recorder from the crashed in the suburbs of the An-148 and has published preliminary data.
According to the experts, the cause of the disaster became incorrect speed data to the flight displays of the aircraft, as well as icing of the engine.
«A preliminary analysis of the registered information, as well as analysis of similar cases in the past, suggests that a factor in the development of special situations in flight could be incorrect speed data on indicators of the pilots, which in turn is connected with icing PPD when in the off state of the heating systems», – stated in the message published on the website of the MAC.
In addition, preliminary analysis showed that during the whole flight Parking all three PPAs were disabled. In all other flights available on the recorder (15 flights), heated PDP was included prior to takeoff as an Executive of start, says, on 13 February, «Novaya Gazeta».