An An-148 plane, which crashed on February 11 in the Moscow suburbs, could not have been activated by the alarm about the sensors heating off. This version was put forward in an interview by MK, the former general designer of Antonov, where the An-148 was developed, Dmitry Kiva.

"The commander has before his eyes a placard where it says: turn on the heating of the LDPE (air pressure receivers). And if the co-pilot did not turn on, then the commander is alerted. The light signal is also activated - the button is lit in yellow, "Kiva said..

According to the former general designer Antonova, one of the warning systems could not work. However, the situation in which both the light signaling and the indication on the scoreboard went out, he completely ruled out.

Another source of publications from the aviation industry also suggested that the An-148 might have either failed to signal the sensor heating off, or they for some reason did not pay attention to warnings.

"Judging by the fact that the actions of the crew were completely mismatched - the commander lowered his nose down to get the speed, the co-pilot, on the contrary, continued to operate the liner in the previous regime - that means they did not understand what was happening. That is, the signaling, most likely, did not work, "he said..

Could the alarm for some reason not work? Could. But such a combination does not happen, so that the warning board and the yellow hot buttons do not work right away. That is, the right pilot burns on the buttons lights, which signal: heating is not on. But the commander also has a scoreboard. It can not be that simultaneously the two control systems that duplicate each other are suddenly disconnected.

An-148 of Saratov Airlines, which flew from Moscow's Domodedovo airport to Orsk, crashed a few minutes after its February 11 departure.

Killed all 65 passengers and six crew members who were on board.

The data of the parametric recorder showed that after take-off, the instruments incorrectly showed the speed of the aircraft - most likely because of the icing of sensors. The reason heating did not work until it is installed.

Dmitry Kiva served as general designer of ANTK Antonov from 2005 to 2015. Prior to that, he was the chief designer and deputy general designer of Antonov.

Source: Medusa.