In September 1976, the first of sixteen OV-10F COIN aircraft were delivered to SkU.3. Initially serialled in the S-1.. range, they were frequently used in the former Portuguese East Timor from 1977 (together with the A-4E and F-5E) to deal with continued opposition to the occupation which resulted in Timor becoming an Indonesian province. The first F-16s were delivered in December 1989 and replaced the OV-10s in SkU.3, the Broncos then being used to reactivate SkU.1. After accidents in 2005 and 2007, the type was grounded.

On display at Museum Pusat TNI-AU Dirgantara Mandala. The emblems of Skadron Udara 3, 1 and 21 are visible under the cockpit. Thirteen Broncos operated from 1976-2007 and were used in COIN operations. These aircraft differed from the US versions by mounting 4 x 12.7mm MGs instead of 7.62mm guns.