MAIR Holdings, Inc. operates as a holding company that offers regional air carrier services. It operates through two subsidiaries, Mesaba Aviation, Inc. and Big Sky Transportation Co. Mesaba Aviation, doing business as ‘Mesaba Airlines’, operates as a Northwest Airlink partner. As of March 31, 2006, Mesaba served 102 cities in the United States and Canada from Northwest’s hub airports located in Minneapolis/St. Paul, Detroit, and Memphis. Big Sky Transportation Co., doing business as ‘Big Sky Airlines’, primarily provides scheduled passenger, airfreight, express package, and charter services. As of March 31, 2006, it provided scheduled air service to 22...