Wikipedia
Dyagilevo (also given as Dyagilevo, Ryazan Dyagilevo) is an air base in Ryazan Oblast, Russia located 3 km west of Ryazan. It has served as a training center for Russia's strategic bomber force.
In 1955 it was only one of 6 Soviet bases capable of handling the Myasishchev M-4 bomber. In 1967 it had 7 Tupolev Tu-22 used for training. In 1973 it received 2 Tu-22M0 aircraft. It was also home to 43 TsBPiPLS (43rd Center for Combat Application and Training of Air Crew) which included the Tu-22M, Tu-95MS, and Tu-134UBL trainer. In 1985 the 49 TBAP (49th Heavy Bomber Aviation Regiment) arrived at Dyagilevo, flying Tu-22M and Tu-95 aircraft and eventually converting into an ITBAP (training regiment). The 49th Regiment was part of the 43rd Centre, and eventually disbanded in 1997.
By 1994 it received 24 Tu-95K (Bear-G) bombers for disposal under the START II treaty. A number of Tu-16, Tu-22, and M-4 are mothballed.