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.
At the Irkutsk Aviation Plant, a branch of Irkut Corporation (part of UAC), the construction of the second MC-21-300 aircraft, intended for flight testing, was completed. The testing results of the first test aircraft were taken into account in the production of a new aircraft. On March 25, the MC-21-300 was transferred from the final assembly shop to the flight test department.
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.