Built in 1980 as C-GDIW. Delivered to ACES in November 1980 as HK-2548X and later re-registered HK-2548. Sold to ADA-Aerolínea de Antioquia in September 2004, withdrawn and stored at Medellín (SKMD / EOH) in 2014. Sold to Ikhana Group Inc. in October 2017 and dismantled for shipment to Murrieta CA. Registered N904RT and Rebuilt as Twin Otter X2.