Proposed Amendment of Class E Airspace; Duncan, OK

This action proposes to amend the Class E airspace extending upward from 700 feet above the surface at Halliburton Field, Duncan, OK. The FAA is proposing this action as a result of an airspace review caused by the decommissioning of the Duncan VHF omnidirectional range (VOR) navigation aid as part of the VOR Minimum Operational Network (MON) Program and the cancellation of the associated instrument procedures. The geographic coordinates of the airport would also be updated to coincide with the FAA's aeronautical database, as well as an editorial change removing the city associated with the airport name in the airspace designation.