Dyagilevo Air Base (Ryazan)

Dyagilevo is a military air base located in Ryazan Oblast, Russia, approximately 3 km west of Ryazan. It functions as a training center for Russia's strategic bomber force. As of 2022, the base hosts the 203rd Guards Orlovsky Independent Aircraft-refuelling Aviation Regiment, operating Ilyushin Il-78/78M aircraft, and the 49th Instructor Red Banner Heavy Bomber Aviation Regiment, which is part of the 43rd Guards Oryol Center for Combat Employment and Retraining of Long-Range Aviation Flight Personnel. The Ryazan Museum of Long-Range Aviation is also located on the base.

Historically, Dyagilevo was one of six Soviet bases capable of handling the Myasishchev M-4 bomber in 1955. In 1967, it housed seven Tupolev Tu-22s for training. The base received Tupolev Tu-22M aircraft in 1973. It was also home to the 43 TsBPiPLS (43rd Center for Combat Application and Training of Air Crew), which operated Tu-22M, Tupolev Tu-95MS, and Tupolev Tu-134UBL trainer aircraft. The 49th Heavy Bomber Aviation Regiment arrived in 1985, flying Tu-22M and Tu-95 aircraft before converting into a training regiment; this regiment was disbanded in 1997.

Following the dissolution of the Soviet Union, the Russian Air Force took command of the base. By 1994, 24 Tu-95K bombers were received for decommissioning under the START II treaty. A number of Tu-16, Tu-22, and M-4 aircraft are mothballed at the base. In 2009, the 1st Instructor Heavy Bomber Aviation Squadron (Tu-22M3 and Tu-134), 2nd Instructor Heavy Bomber Aviation Squadron (Tu-95MS and An-26), and the 43rd Guards Orlovskiy Center for Combat Employment and Retraining of Personnel were reported as active.

On December 5, 2022, the base was attacked by Ukrainian drones, resulting in damage to a Tu-22M3 bomber, destruction of a fuel truck, three personnel fatalities, and five injuries. The 360 Aircraft Repair Factory (360 ARZ) located at the base was placed under sanctions by the European Union and USA in December 2022 due to the Russian invasion of Ukraine. On June 1, 2025, the base was attacked again by Ukrainian drones as part of Operation Spider's Web.