From 1965 to 1972, MiG-17s from the VPAF 921st and 923rd FRs would claim 71 aerial victories against U.S. aircraft: 11 Crusaders, 16 F-105 Thunderchiefs, 32 F-4 Phantom IIs, two A-4 Skyhawks, seven A-1 Skyraiders, one C-47 cargo/transport aircraft, one Sikorsky CH-3C helicopter and one Ryan Firebee UAV., while VPAF lost 63 MiG-17s in air combat According to Russian, from 1965 to 1972, MiG-17s from the VPAF shot-down 143 enemy aircraft and helicopters, while VPAF lost 75 MiG-17s through all causes and 49 pilots were dead