The AIDC AT-3 Tzu Chung (Chinese: 自強; pinyin: Zìqiáng; "Self Reliance")[1] is an advanced jet trainer operated by the Republic of China Air Force (ROCAF).

Design of the advanced jet trainer began in 1975 with a conventional low-wing configuration with a tricycle undercarriage, tandem seat cockpit, and twin turbofans mounted in nacelles on either side of the fuselage.

On 9 September 1989 the 35th Combat Squadron (Night Attack) replaced its Lockheed T-33 Shooting Star trainers with AT-3s painted in SE Asia jungle colors.

The AT-3s delivered to the 35th Combat Squadron (Night Attack) were equipped with semi-recessed twin 12.7 mm machine guns in the bomb bay.

The aircraft operates both as an advanced trainer and for weapons training, and all AT-3 in service with ROCAF are now painted in the Thunder Tiger's Blue, White and Red colors.