Establishment of Class E Airspace; Dupree, SD

This action establishes Class E en route domestic airspace in the Dupree, SD, area. Controlled airspace is necessary to facilitate vectoring of Instrument Flight Rules (IFR) aircraft under control of Minneapolis Air Route Traffic Control Center (ARTCC). This action enhances the safety and efficiency of IFR operations within the National Airspace System. This action also removes the Federal airways exclusionary language from the regulatory text.