21 June, 2017 MC-21-300 aircraft performed the fifth flight within the program of in-plant development tests.
During the flight, lasted 2 hours and 10 minutes, the aircraft fully completed the flight task, which included testing the wing in all configurations. In particular, the landing was carried out in the landing configuration of high lift devices. The aircraft flew with retracted landing gear.
On 20 June, 2017 Oleg Demchenko, the president of Irkut Corporation at the Paris International Air Show said that МС-21-300 will perform more than 30 test flights within development test program after which certification tests will begin.
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.