 Two J7GS were recently seen to be operational during the 66th Anniversary of the Sri Lankan Air Force in March 2017.A single J7GS and J7BS were recently overhauled in China, and CATIC and the air force additionally overhauled an FT7 and another J7GS at the recently opened SLAF overhaul facility.The aircraft overhaul wing was opened as part of a joint venture between the air force and CATIC with a plan to overhaul all F7 aircraft in service.