No. 3 Aircraft Depot (No. 3 AD) was a maintenance unit of the Royal Australian Air Force (RAAF). Formed in March 1942 at RAAF Station Amberley, Queensland, its prime function initially was the assembly and despatch of combat aircraft from the United States; it also performed salvage operations. From 1942 until 1947 it took on the role of administering the Amberley base. The depot was responsible for heavy maintenance of the RAAF's English Electric Canberra jet bombers following their entry into service in 1953. In the 1970s it began maintaining and upgrading the General Dynamics F-111C swing-wing bomber, along with Bell UH-1 Iroquois and Boeing CH-47 Chinook helicopters. No. 3 AD merged with No. 482 Maintenance Squadron in March 1992 to form No. 501 Wing, which maintained the F-111 until d