According to the committee, the crash of the plane could be related to the incorrect data on the flight’s speed due to the sensors’ ice-up.
"A preliminary analysis of registered information, and also the analysis of similar cases that occurred in the past suggest that a special situation could have developed in mid-air due to the incorrect data on the flight’s speed on the pilots’ displays, which, in turn, could have been linked with the ice-up of the total pressure probes as their heating systems were switched off," TASS cited the Interstate Aviation Committee as saying.
"During all the other flights registered on the flight recorder [15 more flights], the heating of the total pressure probes was switched on before the takeoff in the line-up position," the report says.
The committee added that an emergency situation developed aboard the crashed An-148 passenger plane about 2.5 minutes after the take-off.
"A special situation began to develop about 2 minutes and 30 seconds after the takeoff at an altitude of around 1,300 meters and the indicator speed of 465-470 km/h," the Interstate Aviation Committee said, adding that at this moment, the passenger plane’s flight recorders registered divergences between the readings of the speed sensors.
