Aircraft
Fourth MC-21-300 Airliner Joins Flight Test Program
The MC-21-300 narrowbody is due to complete certification in late 2020.
A fourth MC-21-300 prototype joined Irkut's flight test program on December 25.
A fourth MC-21-300 prototype joined Irkut's flight test program on December 25.

Russia’s Irkut yesterday added a fourth example of its MC-21-300 to the narrowbody airliner program’s flight test fleet. The aircraft, which incorporates design changes based on lessons learned from flight testing of the first three prototype aircraft, flew for one hour and 40 minutes to an altitude of just under 10,000 feet and at speeds of up to around 270 knots.