FAB-500

The FAB-500 is a general-purpose, high-explosive aerial bomb family originally developed in the Soviet Union. Development of the initial FAB-500sv model began in 1929, with testing and series production commencing in 1931. Early structural refinements between 1932 and 1935 modified the lift eyelets, tail cone joint, and stabilizing fins to improve structural integrity. During World War II, the long welded FAB-500M-43 and short welded FAB-500M-44 were introduced, followed by the FAB-500M-46. Cold War developments led to the FAB-500M-54, designed with a ballistic nose ring for internal carriage in heavy bombers, and the low-drag FAB-500M-62, designed for external carriage on fighter-bombers.

The bomb family consists of unguided, high-explosive munitions, with early models featuring a single nose fuze. Capabilities vary by model: the FAB-500M-62T features a heat-resistant casing for high-speed flight, while other variants include parachute-retarded models, thick-cased high-explosive models, and fragmentation variants containing submunitions. The weapon is designed to destroy headquarters, warehouses, and reinforced concrete structures. Modern variants utilize the UMPK glide kit, which features pop-out wings and satellite guidance to provide stand-off capability.

The FAB-500 is widely deployed and has been exported to several countries. Current and historical operators include the Soviet Union, Russia, India, Indonesia, Malaysia, Mali, China, the Republic of China, Vietnam, Venezuela, and the Spanish Republic.

The munition was first used operationally by the Spanish Republic during the Spanish Civil War, where it was designated R-500. It saw use throughout World War II and was later widely deployed by Soviet and Afghan forces during the conflict in Afghanistan in the 1980s. The bomb was also utilized by Russian and Syrian forces during the Syrian Civil War.

During the Russian invasion of Ukraine, Russian forces have deployed the FAB-500M-62 variant, including versions fitted with UMPK glide kits launched from Su-35 aircraft. Notable incidents in the conflict include the recovery of unexploded bombs in Chernihiv and Odesa in 2022, and a strike on an apartment building in Kharkiv in October 2024.