The PAC JF-17 Thunder (), or CAC FC-1 Xiaolong (Fierce Dragon; ; ), is a light-weight, single-engine, multi-role combat aircraft developed jointly by the Pakistan Air Force, the Pakistan Aeronautical Complex (PAC) and the Chengdu Aircraft Industries Corporation (CAC) of China. Its designation "JF-17 Thunder" by Pakistan is short for "Joint Fighter-17", while the designation "FC-1 Xiaolong" by China means "Fighter China-1 Fierce Dragon".