The Sky Sword I, Tien Chien I, or TC-1 (Chinese: 天劍一; pinyin: Tiān Jiàn Yī; Wade–Giles: Tʻien1 Chien4 I1) is a short range infrared guided air-to-air missile.
It consists of an imaging infrared seeker, a high explosive warhead, a solid propellant motor and a guidance control unit.
[2] The Sky Sword 1 is also used as a surface-to-air missile by the Antelope air defence system.
[3][4] The Sky Sword 1 was developed in the mid-1980s and revealed in May 1986, as Taiwan's first indigenous air-to-air missile.
[5] The production of the missile started in 1991 and the air-to-air version entered ROCAF service in 1993.