sentences:  The Kh-28 entered service with the Soviet Air Force in 1973, and has been widely exported.It was cleared for use on the Su-17M/Su-20/Su-22M, Su-24M, Tupolev Tu-16, Mikoyan-Gurevich MiG-25BM, MiG-27 and Tupolev Tu-22M aircraft.It was also tested on an Antonov An-12BL SEAD variant of the transport that could carry four of the missiles.