Subscription Information This and other selected Air Traffic publications are available online: www.faa.gov/air_traffic/publications AIM Subscription Information *For those desiring printed copies, current pricing is available on the GPO website at http://bookstore.gpo.gov. To Obtain Copies of this Publication General Public  * Government Organizations* Write: Superintendent of Documents U.S. Government Printing Office P.O. Box 979050 St. Louis, MO 63197 − 9000 Phone: 202 − 512 − 1800 Online : https://bookstore.gpo.gov This manual will be available on the FAA website by its effective date. All Government organizations are responsible for viewing, download- ing, and subscribing to receive electronic mail notifications when changes occur to this manual.  Electronic subscription information can be obtained by visiting  http://www.faa.gov/air_traffic/publications.