Establishment of Class D Airspace; and Revision of Class E Airspace; Big Delta, Allen Army Airfield, Fort Greely, AK

This action establishes Class D airspace and revises Class E airspace at Big Delta, Allen Army Airfield (BIG) on Ft. Greely, Alaska. This action was taken at the request of the United States Army to enable them to establish the appropriate airspace to open an Airport Traffic Control Tower (ATCT) at BIG to support operations of the U.S. Army Space and Missile Defense Command. This action also enlarges Class E Airspace from 700 ft. above the surface to the point at which it is sufficient to contain aircraft executing standard instrument approach procedures (SIAP). The new BIG ATCT is being established to provide airport traffic control service to aircraft operating at BIG due to increased airport operations caused by an expanded homeland security mission at Ft. Greely.