On June 22, 2021, an MC-21-310 prototype aircraft equipped with Russian PD-14 engines flew from the airfield of the Irkutsk Aviation Plant, a branch of Irkut Corporation (part of the UAC of the State Corporation Rostec), to the Ulyanovsk-Vostochny airfield.

The plane was piloted by a crew consisting of 1st class test pilot Vasily Sevastyanov, 1st class test pilot Andrey Voropaev, test engineer Anton Kuznetsov.

Vasily Sevastyanov said: "The flight was in the normal mode, there are no comments on the operation of the equipment."

In Ulyanovsk, at the Spektr-Avia enterprise, the plane will be painted, after which it will fly to the airfield of the LII them. M.M. Gromov "Ramenskoye" (Zhukovsky, Moscow region) to continue testing. The MC-21-310 aircraft (tail number 73055), equipped with new Russian PD-14 engines, took to the skies for the first time in December 2020.