Seen during the flypast of current day Russia aircraft at Zhukovsky during the centenary air show of the Russian Air Force in 2012. The Beriev A-50U Mainstay (RF-92957 / 47 Red / 0043453577 / 40-05) is a Russian airborne early warning and control (AEW&C) aircraft based on the Ilyushin Il-76 transport.