The Su-24 frontline bomber is an all-weather, low-level attack aircraft known by the NATO codename 'Fencer'. The aircraft has a conventional aerodynamic configuration with a variable-sweep shoulder wing, side-mounted intakes and a two-seat cockpit. The first production aircraft flew in December 1971, and they stayed in service through the 1980s. The total production of the Su-24 type was about 1,400 planes and the aircraft continued in service with the Russian Air Force and Navy, and the air forces of Azerbaijan, Algeria, Belarus, Kazakhstan, Libya, Syria and Ukraine.