The FAB-500 is a Soviet-designed 500-kilogram (1,100 lb) general purpose air-dropped bomb with a high-explosive warhead, primarily used by the Russian Aerospace Forces, former Soviet republics and customer countries.

[4] The latest variants of the FAB-500 bomb use the UMPK, a winged system developed after 2022 Ukraine war, for precision satellite guidance and increased stand-off distance.

[11] In March 2023, Russian Su-35s launched a number of FAB-500 M-62, wreckage of which indicated that they had been fitted with an UMPK, a glide kit involving pop-out wings.

It is unknown whether these had an internal navigation system, or were fitted with wings simply to extend the range to up to 70 km.

[13][14][15] As of May 2023, UMPK-equipped FAB-500 glide bombs have continued to be used by Russia in Ukraine, with up to 20 of them being dropped every day, and Ukrainian air defences lack the capability to intercept them.