Delivered to the Soviet Air Force in 1966. To GosNII GA state scientific research institute for civil aviation as CCCP-11531 in 1975 and converted to an An-12BPTs "Tsiklon" weather control aircraft in 1978. Reregistered as RA-11531 and converted back to a standard AN-12BP in 1993. Leased to various operators and crashed in Angola in 1997.