Amendment of Class D and Class E Airspace; Biloxi, MS, and Gulfport, MS

This action amends Class D airspace, and Class E surface airspace, in addition to removing the NOTAM part-time status from Class E airspace designated as an extension, and amending Class E airspace extending upward from 700 feet above the surface at Keesler Air Force Base (AFB), Biloxi, MS, and Gulfport-Biloxi International Airport, (formerly Gulfport-Biloxi Regional Airport), Gulfport, MS. The geographic coordinates for these airports and the Keesler TACAN navigation aid are adjusted in the associated Class D and E airspace to match the FAA's aeronautical database. Also, this action replaces the outdated term "Airport/Facility Directory" with the term "Chart Supplement" in the Class D and Class E surface area legal descriptions. This action enhances the safety and management of instrument flight rules (IFR) operations at these airports.