The interstate aviation Committee has finished decoding the parametric data recorder of the An-148, calling one of the causes of the disaster.
according to MACK, "special situation" start to develop, presumably through two-and-a-half minutes after separation at an altitude of about 1300 meters and speed 465-470 miles per hour. At this point there were differences in the speed readings from ï?ï?ï?1 (module air data) (ï?ï?ï?1) left of the pilot and ï?ï?ï?3 (ï?ï?ï?3, backup).
Preliminary analysis shows that a catastrophe could occur due to incorrect data on flight speed. Error devices, most likely, was associated with the " icing PPD (receivers total pressure