Another batch of fifth-generation Su-57 and Su-35S aircraft has been delivered to the Russian Air Force. The number of aircraft is not reported. It also became known that as part of the expansion of production capacity, to increase the production volumes of fifth-generation aircraft, the construction of an additional workshop has begun, where Su-57 systems will be tested. Previously, work was completed to expand the flight test station. Today, the Su-57 is considered the most modern frontline aviation aircraft