On September 13, the second stage of MC-21-300 in-plant development tests program has begun. The modified airplane systems worked without complaint during the flight. The flight lasted about 2 hours.
In the course of preparations for the second stage of MC-21-300 tests strain gauges have been mounted on the aircraft. They allow to accurately measure loads on the structure. Also by the results of the first flight test stage the software has been corrected .
The main goal of this stage of testing is to extend the range of flights by mass, centering, speed and altitude.
On November 2, 2017, the MC-21-300 test aircraft performed the first flight from the airfield of Flight Research Institute n.a. M.M. Gromov (Zhukovsky city, Moscow region). The flight lasted more than three hours. The characteristics of stability and controllability were assessed at the altitudes varying from 6,000 to 12,000 meters. All aircraft systems operated normally.
On July 20, 2017, during the International Aviation and Space Salon MAKS-2017, Sberbank and Irkut Corporation signed an agreement on the development of cooperation on the MC-21 project. The agreement implies the possibility to provide the Corporation with a wide range of financial products of the bank for the development of the MC-21 project, including the after-sales support of the aircraft.