FAA Chart Users’ Guide - Terminal Procedures Publication (TPP) - Terms 94 The city and state with which the airport is associated is located on both the top and bottom margins. At the center of the top margin is the FAA numbering system. This Approach and Landing (AL) number is followed by the  organization responsible for the procedure in parentheses, e.g., AL-18 (FAA), AL-227 (USAF). The procedure title is located on both the top and bottom margins. It is derived from the type of navigational facility that is  providing the final approach course guidance. The title is abbreviated, e.g. ILS, RNAV, NDB, etc. For airports with parallel  runways and simultaneous approach procedures, “L”, “R” or “C” follows the runway number to distinguish between left,  right, and center runways. The airport name is shown on both the top and bottom margins below the procedure title. The airport identifier is shown in  parentheses following the airport name. Airports outside the contiguous United States will be shown with the FAA desig- nated identifier followed by the ICAO location identifier. The Date of Latest Revision is shown on the top margin above the procedure title. The Date of Latest Revision identifies  the Julian date the chart was last revised for any reason. The first two digits indicate the year, the last three digits indicate  the day of the year (001 to 365/6). The side margins show the volume identification, i.e. SW-3, followed by the current issue date and the next issue date,  e.g. SW-3, 21 JUL 2016 to 15 SEP 2016. The FAA Procedure Amendment Number, located on the left bottom margin below the City, State, represents the most  current amendment of a given procedure. The Procedure Amendment Effective Date represents the AIRAC cycle date on  which the procedure amendment was incorporated into the chart. Updates to the amendment number and effective date  represent procedural/criteria revisions to the charted procedure, e.g., course, fix, altitude, minima, etc. Top Margin Information: Side Margin Information: Bottom Margin Information: Year|Day of Year Example: Amendment Procedure Date Example: Original Procedure Date