ARTCC BOUNDARY SEGMENTS DESCRIPTIONS DATA BASE RECORD LAYOUT (ARB-FILE) INFORMATION EFFECTIVE DATE: 04/05/2012 RECORD FORMAT: FIXED LOGICAL RECORD LENGTH: 397 EACH RECORD ENDS WITH A CARRIAGE RETURN CHARACTER AND LINE FEED CHARACTER (CR/LF). THIS LINE TERMINATOR IS NOT INCLUDED IN THE LOGICAL RECORD LENGTH. GENERAL INFORMATION: 1. LEFT JUSTIFIED FIELDS HAVE TRAILING BLANKS 2. RIGHT JUSTIFIED FIELDS HAVE LEADING BLANKS 3. ELEMENT NUMBER IS FOR INTERNAL REFERENCE ONLY AND NOT IN RECORD Some of the ARTCC boundaries defined by the ARTCC facility are composed of more than a single closed shape. Due to the format constraints and naming conventions of the legacy ARB file it is not possible to publish each shape separately. In these cases it is necessary to read the point description text for the key phrase "TO POINT OF BEGINNING" to identify where the shape returns to the beginning and forms a closed shape. J T L S L E N U Y E T O L U S P N A C E M T E G R A M B T T T E E H I N R O T N FIELD DESCRIPTION L AN 12 00001 NONE RECORD IDENTIFIER ARTCC IDENTIFIER + ALTITUDE STRUCTURE CODE + FIVE CHARACTER ARTCC BOUNDARY POINT DESIGNATOR L AN0040 00013 NONE CENTER NAME L AN0010 00053 NONE ALTITUDE STRUCTURE DECODE NAME L AN0014 00063 ARP4 LATITUDE OF THE BOUNDARY POINT L AN0014 00077 ARP5 LONGITUDE OF THE BOUNDARY POINT L AN0300 00091 ARB21 DESCRIPTION OF BOUNDARY LINE CONNECTING POINTS ON THE BOUNDARY L AN0006 00391 ARB28 SIX DIGIT NUMBER USED TO MAINTAIN PROPER SEQUENCE OF BOUNDARY SEGMENTS FOR REPORT PURPOSES L AN0001 00397 ARP25 AN 'X' IN THIS FIELD INDICATES THIS POINT IS USED ONLY IN THE NAS DESCRIPTION AND NOT THE LEGAL DESCRIPTION