flight in 1958, but the nature of the threat changed from over-the-Pole manned aircraft to ballistic missiles. Many interceptor aircraft programs of the period were cancelled. Since Canada and the United States had signed a joint NORAD treaty in 1958, the BOMARC system was considered to address the bomber threat. With no export sales in prospect, the government of the time decided the defence budget could not support both missile operations and aircraft development, and the Arrow program was cancelled early in 1959. The loss of the Arrow project lead to the closing of Avro Canada and the loss of many aerospace workers. In 1978 Judy Cameron became the first female pilot hired to fly for a major Canadian carrier (Air Canada). Airline regulation Passenger airlines were closely regulated in Canada from the 1930s until the late 1970s. Regulations controlled which companies could participate as regional or national carriers, and the routes, schedules, and fares charged were approved by the government. Trans-Canada Airlines was given governmental preference for routes and international traffic. Deregulation of airlines in the United States, along with continuing requests by CP Air and Wardair to provide national service, were among the factors that lead to changes in the regulations. These included the "Air Canada Act" of 1977, which turned the national airline into a Crown corporation on virtually an equal competitive footing with other Canadian airlines. By 1988 Air Canada had become fully privatized. The National Airports Policy of 1994 turned over control of 90 airports to local organizations. Additionally, air navigation services were sold in 1996 to Nav Canada, a private organization. Centennial celebration In 2009, commemorations of the 100th anniversary of powered flight in Canada were wide spread. Part of the contribution of the Canadian military was to paint the 2009 Demonstration McDonnell Douglas CF-18 Hornet in a dark blue and gold paint scheme which included the names of the 100 most influential people in Canadian aviation history. See also Air Canada Avro Canada C102 Jetliner Avro Canada CF-100 Canuck Bombardier Aerospace and Embraer S.A. government subsidy controversy Canada's Aviation Hall of Fame Canadian Airlines List of defunct airlines of Canada List of defunct airports in Canada Operation Yellow Ribbon Pacific Western Airlines Transair (Canada) Western Canada Aviation Museum Ontario Provincial Air Service References Notes Bibliography Dobson, Alan. "Canadian Civil Aviation, 1935–45: Flying between the United States and Great Britain." International History Review, Volume