Establishment of Class E Airspace; and Modification of Class E Airspace; Alpena, MI

This notice establishes Class E airspace and modifies Class E airspace at Alpena, MI. A Global Positioning System (GPS) Standard Instrument Approach Procedure (SIAP), 012 deg. helicopter point in space approach, has been developed for Alpena General Hospital Heliport, Alpena, MI. Controlled airspace extending upward from 700 to 1200 feet above ground level (AGL) is needed to contain aircraft executing the approach. This action modifies existing controlled airspace for Alpena, MI, in order to include the point in space approach serving Alpena General Hospital Heliport. In addition, air carrier operations are routinely conducted into and out of the airport during periods of time when the airport traffic control tower (ATCT) is closed. This action creates a Class E airspace area during periods of time when the ATCT is closed to better accommodate those operations.