High Quality Content by WIKIPEDIA articles! The Shenyang J-8 (Jian-8; NATO reporting name Finback) is a high-speed, high-altitude Chinese-built single-seat interceptor fighter aircraft. The effort to develop an all-weather interceptor began in full in 1964 and this produced the first Chinese-designed and built jet fighter to combat new, high altitude threats such as the B-58 Hustler bomber, F-105 Thunderchief fighter-bomber and Lockheed U-2 spy plane. In 1964 the People's Liberation Army Air Force requested an aircraft from Shenyang Aircraft Corporation and the 601 Institute to develop a fighter/interceptor to counter bombers and spy planes as the, then, newly introduced Chengdu J-7 (a reverse engineered MiG-21F-13) was incapable of doing so. The prototype took its maiden flight in 1969. Despite the early mid to late 1960s origins of the J-8, due to political turmoils such as the Cultural Revolution, the J-8 was not produced until 1979 and entered service in 1980. Its basic configuration resembles an enlargement of the delta-wing of the J-7, with two Liyang (LMC) Wopen-7A turbojet engines and a maximum speed of Mach 2.2.