Amendment of Class E Airspace, Knoxville, TN; and Establishment of Class E Airspace, Madisonville, TN

This action amends Class E surface airspace at Knoxville Downtown Island Airport, Knoxville, TN, by adding to the airspace description the exclusion of a 1-mile radius around University of Tennessee Medical Center Heliport, to allow helicopters departing from the heliport to no longer require a clearance. Also, the Benfi non- directional radio beacon (NDB) has been decommissioned, requiring redesign of Class E airspace extending upward from 700 feet above the surface at McGhee-Tyson Airport, and Monroe County Airport, Madisonville, TN, is moved to stand-alone airspace with its own designation. This action is necessary to further the safety and management of Instrument Flight Rules (IFR) operations at these airports. This action also updates the geographic coordinates of Knoxville Downtown Island Airport, McGhee Tyson Airport, and Gatlinburg-Pigeon Forge Airport in the associated Class E airspace areas to coincide with the FAA's aeronautical database.