21. In 1945 the Department of Aviation made the existing Darwin military airfield available for civil aviation purpose. 22. The Department of Aviation was announced by Prime Minister Malcolm Fraser as a new agency in 1982. 23. Parking and concession revenues are down 30 to 40 percent, according to the Chicago Department of Aviation . 24. In 1945, the Department of Aviation made the existing Darwin military airfield available for civil aviation purposes. 25. He organized the Department of Aviation , with its aeronautical workshops and a school for training military pilots. 26. Unlike many others in Atlanta's Department of Aviation , DeCosta contends that a second airport is unnecessary. 27. Parking and concession revenues are down 30 percent to 40 percent, according to the Chicago Department of Aviation . 28. The airport is in northeastern Denver and is operated by the City & County of Denver Department of Aviation . 29. An official at the Department of Aviation confirmed the committee's decision, as did a spokesman for JVK. 30. He next served as Branch Head, Aviation Weapon Systems Requirements Branch, Department of Aviation , Headquarters Marine Corps.