Klokovo is an air base in Russia on north fringe of Tula. It has been home to 374 OVTAP (374th Independent Military Transport Aviation Regiment) flying Ilyushin Il-76 (ASCC: Candid) and Antonov An-22 (ASCC: Cock) large cargo planes, of the 12th Military Transport Aviation Division "Mginskaya Red Banner". A scholastic regiment of Tambov military aircraft school (Aero L-29 Delfín (ASCC: Maya)) was based there. The runway was used by the military together with a civil airport, which closed in 1992. The base was used by the 374th Military-Transport Aviation Regiment between 1946 and 1975 and is currently home to the 490th Independent Helicopter Regiment.