IAC announced an interim report on the SSJ crash in the Moscow region

The IAC presented an interim report on the SSJ-100 crash in the Moscow region on July 12

The SSJ-100 crash in the Moscow region on July 12 was caused by malfunctions or incorrect installation of sensors. This became known thanks to the interim report of the Interstate Aviation Committee (IAC), reports TASS.

According to the report, during the flight, the crew noticed the angle of attack sensors, which behaved abnormally. “The co-pilot informed: “Look, we have a big angle of attack.” The FAC (aircraft commander) reacted: “Is the angle of attack sensor not working?”, — the data in the IAC document is given.

In addition, the speed limit was exceeded in flight, as evidenced by the triggered warning signal. None of the crew members discussed this sound. The co-pilot did not switch the radio station during the report to the Domodedovo dispatcher about the unreliable speed indication, as a result, the first did not receive information. Further, the dispatcher did not receive any messages from the crew.

When the aircraft exceeds speed, the on-board systems release interceptors and lift the nose of the vessel to slow it down, but due to the increased load on the SSJ-100 engines, the plan failed. The interceptors reduced the lifting force, which led to a decrease in the side. The pilots switched the engines to take-off mode and tried to pull the aircraft up with the control handle, at which point the elevators were set to descend. For several seconds, the side had been tilting to the right.

A few seconds before the crash, the engines were switched to low-gas mode. At a speed of 365 knots, the plane collided with the ground.

The report also indicates that the readings of the angle of attack sensors showed a discrepancy during flights a week before the incident in the Moscow region. At the end of the flight, the pilots reported a malfunction.

Earlier, the technician admitted to incorrectly installing sensors on the SSJ-100 that collapsed in the Moscow region. It is clarified that the specialist mistakenly installed two sensors not according to the necessary labels.

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