A prototype of the MC-21 medium-range aircraft with new Russian systems and domestically-sourced parts has already made 19 test flights in Zhukovsky near Moscow as part of certification tests, with the aircraft logging a total of 74 hours in the air, the state corporation Rostec reported.

"The import-substituted experimental airliner MC-21, equipped with domestic systems and PD-14 engines from our United Engine Company, made 19 flights in Zhukovsky near Moscow as part of certification tests. In total, the aircraft spent 74 hours in the air," the report says.

The state corporation added that a second aircraft is also set for certification. The aircraft is being prepared for its first flight in Irkutsk.

"With another MC-21 out for tests, certification will proceed faster. The required number of flights and flight hours will be distributed between the two aircraft. This process must be completed in full to guarantee the safety and reliability of the aircraft," Rostec noted.