All four crew members ejected safely before the aircraft went down in the Irkutsk region

Footage shows Su-27 and Su-35 jets flying within meters of a British RC-135W during April incident

The latest Sukhoi fighter and attack aircraft were recently delivered, according to the United Aircraft Corporation.

United Aircraft Corporation's Komsomolsk-on-Amur facility now has new fuel and avionics testing facilities. Air Force has an order for 76 Sukhoi fighters but total production is unknown

Combat aircraft, which have not been produced since 1994, have been used in long-range strikes in Ukraine

Aircraft manufactured by Irkutsk were recently delivered and will be used in advanced training of Su-35 and S-57 fighter pilots, among others

The Russian state-owned company again did not detail the number of aircraft in the new batch, which was announced weeks after the previous shipment, in April

Most recent loss was that of a Tupolev Tu-22M bomber on April 19 attributed to a Ukrainian missile

New batch of aircraft was announced a week after the state-owned company delivered the Su-34 bombers

First batch of Sukhoi aircraft have been delivered to the Russian Air Force, the UAC said. Ukraine claimed to have attacked the Morozovsk base with drones