Cheshnegirovo Air Base/Sadovo (ICAO code: Z07T) used to house the 25th Fighter-Bomber Air Regiment (flying MiG-23BN/UBs) of the 10th Composite Aviation Corps. Located in central Bulgaria, north east of Plovdiv. According to the major restructuring plans it became the first regiment to convert to an air base structure. Briefly it housed the entire Bulgarian MiG-23 fleet after which it became inactive.