The CAC/PAC JF-17 Thunder, or FC-1 Xiaolong, is a lightweight, single-engine, multirole combat aircraft developed jointly by the Pakistan Aeronautical Complex (PAC) and Chengdu Aircraft Corporation (CAC) of China. It was designed and developed as a fourth-generation replacement for the third-generation A-5C, F-7P/PG, Mirage III, and Mirage V combat aircraft in the Pakistan Air Force (PAF). The JF-17 can be used for multiple roles, including interception, ground attack, anti-ship, and aerial reconnaissance. The Pakistani designation "JF-17" stands for "Joint Fighter-17", with the "Joint Fighter" denoting the joint Pakistani-Chinese development of the aircraft and the "-17" denoting that, in the PAF's vision, it is the successor to the F-16. The Chinese designation "FC-1" stands for "Fighter China-1".

A multirole combat aircraft (MRCA) is a combat aircraft intended to perform different roles in combat. These roles can include air to air combat, air support, aerial bombing, reconnaissance, electronic warfare, and suppression of air defenses.