F/A-18A Hornet A21-26 was delivered to the RAAF on March 31, 1988 and became the first aircraft to be assigned to 75 Squadron. The aircraft first flew with 75 Squadron in April and in September 1988 both 75 Squadron and A21-26 arrived at RAAF Tindal. In 2005 the aircraft received a special paint scheme to mark the 20th Anniversary of Hornet operations with the RAAF and was first shown at the Avalon Airshow that year. Over its service time; A21-26 spent time with 3SQN, 75SQN, 77SQN, 2OCU and ARDU.

Source: https://www.aviation-center.com.au/contents/en-us/p561.html