One of the Irkut MC-21-300 test aircraft returned to Moscow Zhukovsky from Yakutsk, after completing tests in extremely cold weather in eastern Russia.
Irkut has obtained initial type certification for the -300 from the Russian civil aviation authorities and the trials are aimed at extending this certificate.
The plane in Yakutsk, 73056, has been undergoing tests – at temperatures as low as minus 30C – since January 23.
Russian state technology company Rostec says the jet, powered by Pratt & Whitney PW1400G engines, was “completely cooled” with 12 hours of outdoor exposure before each test phase.
“This was followed by the usual flight preparation procedures – refueling, systems start-up, engine and auxiliary power unit start-up, aircraft warm-up, etc.,” he adds.
Flights lasting up to 6 hours were then carried out over different areas of the Sakha Republic, including northern routes, to assess the various systems of the jet.
“The majority of landings were made at night when the lowest temperatures are recorded,” Rostec explains.
He adds that “difficult” scenarios were explored, including stopping and starting the engine in flight.
Irkut general manager Andrei Boginsky said the company had “completed an important test stage” to expand the type certificate for the MC-21-300.
“This year, we plan to test the aircraft intensively in different regions of our country and abroad, including in conditions of high mountains, strong wind shifts and high temperatures,” he added. he.
Rossiya is expected to be the first operator of the MC-21 with plans to introduce the type this year.