ATS AIRWAY DATA BASE RECORD LAYOUT (ATS-FILE) INFORMATION EFFECTIVE DATE: 6/17/2021 RECORD FORMAT: FIXED LOGICAL RECORD LENGTH: 355 FILE STRUCTURE DESCRIPTION: --------------------------- THERE ARE A VARIABLE NUMBER OF FIXED-LENGTH RECORDS FOR EACH AIR TRAFFIC SERVICE ROUTE AIRWAY (ATS). THE NUMBER OF RECORDS IS DETERMINED BY THE NUMBER OF POINTS AND THE POINT TO POINT ASSOCIATED INFORMATION DEFINING THE ATS. THE ATS AIRWAY FILE CONSISTS OF INDIVIDUAL POINTS ALONG AN ATS AIRWAY. THESE POINTS MAY BE NAVIGATION FACILITIES, NAMED FIXES, UNNAMED(NUMBERED)AIRWAY CROSSINGS, UNNAMED TURNING POINTS, U.S. BORDERS, OR AIR TRAFFIC CONTROL CENTER(ARTCC) BOUNDARY CROSSING POINTS. DIRECTION OF AN ATS AIRWAY IS WEST TO EAST AND SOUTH TO NORTH. LAST POINT ON AN ATS AIRWAY IS THE TERMINATION POINT. EACH OF THE SIX RECORD TYPES IS IDENTIFIED BY A RECORD TYPE INDICATOR (ATS1, ATS2.....ATS5, RMK), ATS AIRWAY DESIGNATION, ATS AIRWAY ID, RNAV INDICATOR, ATS AIRWAY TYPE, POINT SEQUENCE NUMBER (ATS RECORDS ONLY), AND RECORD SEQUENCE NUMBER. ALL POINTS AND POINT TO POINT DATA IS ARRANGED LOGICALLY TO DEFINE THE ATS AIRWAY. GENERAL REMARK ('RMK') DATA FOLLOWS THE DATA FOR THE LAST POINT TO POINT RECORD IN THE ROUTE. THE FILE IS SORTED BY AIRWAY TYPE, ATS AIRWAY DESIGNATION, ATS AIRWAY ID, POINT SEQUENCE NUMBER, AND RECORD SEQUENCE NUMBER (WHICH DEFINES THE ORDER OF RECORDS WITHIN A GIVEN POINT SEQUENCE NUMBER). 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. DESCRIPTION OF THE RECORD TYPES: -------------------------------- 'ATS1' RECORD TYPE CONTAINS THE BASIC AND MINIMUM ENROUTE ALTITUDE(MEA) DATA FOR EACH ATS AIRWAY POINT/SEGMENT. THERE IS ONE ATS1 RECORD FOR EACH ATS AIRWAY POINT/SEGMENT. 'ATS2' RECORD TYPE CONTAINS THE ATS AIRWAY POINT DESCRIPTION. THERE IS ONE ATS2 RECORD FOR EACH ATS AIRWAY POINT. 'ATS3' RECORD TYPE CONTAINS THE TO CHANGEOVER POINT NAVAID DESCRIPTION. THERE IS ONE RECORD FOR EACH TO CHANGEOVER POINT NAVAID DESCRIPTION. 'ATS4' RECORD TYPE CONTAINS TEXTUAL INFORMATION REGARDING REMARKS ABOUT THE ATS POINT DATA. EACH ATS4 RECORD CONTAINS ONE LINE OF TEXT. THERE CAN BE 0 OR MORE ATS4 RECORDS FOR EACH ATS AIRWAY POINT. 'ATS5' RECORD TYPE CONTAINS TEXTUAL INFORMATION REGARDING EXCEPTIONS TO THE STANDARD ATS CHANGEOVER POINT DATA. EACH ATS5 RECORD CONTAINS ONE LINE OF TEXT. THERE CAN BE 0 OR MORE ATS5 RECORDS FOR EACH ATS AIRWAY POINT. 'RMK ' RECORD TYPE CONTAINS TEXTUAL INFORMATION REGARDING REMARKS ABOUT AN ENTIRE ROUTE AND NOT A SPECIFIC ATS ROUTE POINT. THERE CAN BE 0 OR MORE RMK RECORDS FOR EACH ATS AIRWAY. GENERAL INFORMATION: -------------------- 1. LEFT JUSTIFIED FIELDS HAVE TRAILING BLANKS. 2. RIGHT JUSTIFIED FIELDS HAVE LEADING ZEROS EXCEPT WHEN RIGHT JUSTIFIED ALPHA/NUMERIC(R AN) CONTAINS BLANKS. 3. ELEMENT NUMBER IS FOR INTERNAL REFERENCE ONLY AND NOT IN RECORD. 4. THE UNIQUE RECORD KEY IS MADE UP OF THE ATS AIRWAY DESIGNATION, ATS AIRWAY ID, RNAV INDICATOR, ATS AIRWAY TYPE, AIRWAY POINT SEQUENCE NUMBER, AND RECORD SEQUENCE NUMBER. IT IS REPEATED ON EACH RECORD. 5. PART95 DESCRIPTION - MINIMUM ENROUTE IFR ALTITUDES OVER BELOW PARTICULAR ROUTES AND INTERSECTIONS (AMENDMENTS PUBLISH EVERY 56 DAYS) (BOOK PUBLISHED SEMI-ANNUALLY) 6. DLID - AIRWAY DESIGNATION BELOW - DESCRIPTION -------------------------------- AT = ATLANTIC ROUTE BF = BAHAMA ROUTE PA = PACIFIC ROUTE PR = PUERTO RICO ROUTE 7. DLID - AIRWAY TYPE BELOW - DESCRIPTION --------------------------------- ENCODE DECODE ------ ------------------ A = ALASKA SPECIFIC ATS AIRWAY H = HAWAII SPECIFIC ATS AIRWAY BLANK = GENERAL ATS AIRWAY 8. NAVAID FACILITY TYPE BELOW - DESCRIPTION ----------------------------------------- NDB/DME, NDB, VORTAC, VOR, VOR/DME, DME 9. FIX TYPE(FX36) BELOW - DESCRIPTION ------------------------------------------ ARTCC-BDRY, MIL-REP-PT, TURN-PT, AWY-INTXN, REP-PT, COORDN-FIX 10. FIX TYPE PUBLICATION CATEGORY BELOW - GROUP FOR REPORTS AND PUBLICATIONS AS FOLLOW: (USED FOR NAMED FIXES ONLY) DESCRIPTION ---------------------------------------- FIX = (FIX OR MIL) 11. NAVAID FACILITY/FIX STATE P. O. CODE BELOW - 59 = CANADA MX = MEXICO 12. NAVAID FACILITY/FIX LATITUDE/LONGITUDE BELOW - FORMAT VARIABLE, LEFT JUSTIFIED AS FOLLOWS - DEGREES(NNN) - MINUTES(NN) - SECONDS(NN) (.) FRACTION(NNN) & DRTN(A) ---------------------------------------------------------------- 38-05-47.7N 092-33-10.4W 36-13-40.0N 090-02-10.0W 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 ********************************************************************* 'ATS1' RECORD TYPE - BASIC AND MINIMUM ENROUTE ALTITUDE (MEA) DATA FOR EACH ATS AIRWAY POINT/SEGMENT ********************************************************************* L AN 0004 00001 N/A RECORD TYPE INDICATOR. ATS1: BASIC AND MINIMUM ENROUTE ALTITUDE (MEA) DATA FOR EACH ATS AIRWAY SEGMENT. L AN 0002 00005 DLID ATS AIRWAY DESIGNATION. DESCRIPTION ----------------------- AT = ATLANTIC ROUTE BF = BAHAMA ROUTE PA = PACIFIC ROUTE PR = PUERTO RICO ROUTE L AN 0012 00007 DLID ATS AIRWAY ID L AN 0001 00019 DLID RNAV INDICATOR DESCRIPTION ----------------------- R = RNAV ROUTE BLANK = NON-RNAV ROUTE L AN 0001 00020 DLID AIRWAY TYPE. DESCRIPTION --------------------------- ENCODE DECODE A = ALASKA SPECIFIC ATS AIRWAY H = HAWAII SPECIFIC ATS AIRWAY BLANK = GENERAL ATS AIRWAY R N 0005 00021 AR4 AIRWAY POINT SEQUENCE NUMBER L AN 0010 00026 N/A CHART/PUBLICATION EFFECTIVE DATE (MM/DD/YYYY) L AN 0007 00036 AR2 TRACK ANGLE OUTBOUND - RNAV FORMAT: NNN/NNN EX: 095/275 R N 0005 00043 AR2 DISTANCE TO CHANGEOVER POINT - RNAV FORMAT: NNNNN EX: 00030, 00050 L AN 0007 00048 AR3 TRACK ANGLE INBOUND - RNAV FORMAT: NNN/NNN EX: 096/276 R N 0006 00055 AR5 DISTANCE TO NEXT POINT IN NAUTICAL MILES FORMAT: NNN.NN EX: 071.00, 100.00 (RNAV ROUTES) R AN 0006 00061 AR6 BEARING(RESERVED - PRESENTLY 000.00 ENTERED) FORMAT: NNN.NN OR BLANKS EX: 101.00, 000.15, 002.15 R AN 0006 00067 NONE SEGMENT MAGNETIC COURSE FORMAT: NNN.NN OR BLANKS R AN 0006 00073 NONE SEGMENT MAGNETIC COURSE - OPPOSITE DIRECTION FORMAT: NNN.NN OR BLANKS R AN 0006 00079 NONE DISTANCE TO NEXT POINT IN SEGMENT IN NAUTICAL MILES. FORMAT: NNN.NN OR BLANKS R N 0005 00085 AR7 POINT TO POINT MINIMUM ENROUTE ALTITUDE(MEA) FORMAT: NNNNN EX: 05000, 04000 L AN 0007 00090 AR7 POINT TO POINT MINIMUM ENROUTE DIRECTION(MEA) FORMAT: AAAAAAA EX : E BND, SE BND R AN 0005 00097 AR7 POINT TO POINT MINIMUM ENROUTE ALTITUDE(MEA- OPPOSITE DIRECTION) FORMAT: NNNNN OR BLANKS EX : 12000 L AN 0007 00102 AR7 POINT TO POINT MINIMUM ENROUTE DIRECTION(MEA- OPPOSITE DIRECTION) FORMAT: AAAAA EX: W BND, SW BND R AN 0005 00109 AR8 POINT TO POINT MAXIMUM AUTHORIZED ALTITUDE EX: 45000 OR BLANKS L AN 0005 00114 AR9 POINT TO POINT MINIMUM OBSTRUCTION CLEARANCE ALTITUDE(MOCA) EX: 07500 OR BLANKS L AN 0001 00119 AR11 AIRWAY GAP FLAG INDICATOR 'X' ENTERED WHEN AIRWAY DISCONTINUED R N 0003 00120 AR12 DISTANCE FROM THIS POINT TO THE CHANGEOVER POINT FOR THE NEXT NAVAID. NOTE: THIS FIELD CONTAINS THE DISTANCE IN NAUTICAL MILES OF THE CHANGEOVER POINT BETWEEN THIS NAVAID FACILITY(ATS2 RECORD) AND THE NEXT NAVAID FACILITY(ATS3 RECORD) WHEN THE CHANGE- OVER POINT IS MORE THAN ONE MILE FROM HALF-WAY POINT. FORMAT: NNN EX: 030, 025 R N 0005 00123 AR13 MINIMUM CROSSING ALTITUDE FORMAT: NNNNN EX: 11600 L AN 0007 00128 AR13 DIRECTION OF CROSSING FORMAT: AAAAAAA EX: SE BND R N 0005 00135 AR13 MINIMUM CROSSING ALTITUDE - OPPOSITE DIRECTION FORMAT: NNNNN EX: 12000 L AN 0007 00140 AR13 DIRECTION OF CROSSING - OPPOSITE DIRECTION FORMAT: AAAAAAA EX: E BND L AN 0001 00147 AR15 GAP IN SIGNAL COVERAGE INDICATOR TEXT NOTE ASSOCIATED WITH MEA WHEN CODED 'Y', TEXT OUTPUT FOR PART95 'MEA IS ESTABLISHED WITH A GAP IN NAVIGATION SIGNAL COVERAGE'. L AN 0001 00148 AR16 U.S. AIRSPACE ONLY INDICATOR AIRWAYS CROSSING U.S. BORDERS MUST GO TO FIRST NAVAID IN NEIGHBORING COUNTRY. 'Y' ENTERED INDICATES THAT THE ALTITUDE DATA ONLY AFFECTS U.S. AIRSPACE PORTION OF THAT SEGMENT. TEXT NOTE ASSOCIATED WITH MEA WHEN CODED 'Y', TEXT OUTPUT FOR PART95 'FOR THAT AIRSPACE OVER U.S. TERRITORY'. R A 0005 00149 N45 NAVAID MAGNETIC VARIATION EX: 08E - LEADING BLANKS L AN 0003 00154 N94 NAVAID/FIX ARTCC - - - EX: ZTL L AN 0040 00157 NONE RESERVED(TO POINT-PART95) L AN 0050 00197 NONE RESERVED(NEXT MEA POINT-PART95) R N 0005 00247 NONE POINT TO POINT GNSS MINIMUM ENROUTE ALTITUDE (GLOBAL NAVIGATION SATELLITE SYSTEM MEA) FORMAT: NNNNN EX: 05000, 04000 L AN 0007 00252 NONE POINT TO POINT GNSS MINIMUM ENROUTE DIRECTION (GLOBAL NAVIGATION SATELLITE SYSTEM MEA) FORMAT: AAAAAA EX : E BND, SE BND R AN 0005 00259 NONE POINT TO POINT GNSS MINIMUM ENROUTE ALTITUDE (GLOBAL NAVIGATION SATELLITE SYSTEM MEA- OPPOSITE DIRECTION) FORMAT: NNNNN OR BLANKS EX : 12000 L AN 0007 00264 NONE POINT TO POINT GNSS MINIMUM ENROUTE DIRECTION (GLOBAL NAVIGATION SATELLITE SYSTEM MEA- OPPOSITE DIRECTION) FORMAT: AAAAAA EX: W BND, SW BND L AN 0050 00271 NONE MINIMUM CROSSING ALTITUDE (MCA) POINT R N 0005 00321 NONE POINT TO POINT DME/DME/IRU MINIMUM ENROUTE ALTITUDE (MEA) FORMAT: NNNNN EX: 05000, 04000 L AN 0006 00326 NONE POINT TO POINT DME/DME/IRU MINIMUM ENROUTE DIRECTION (MEA) FORMAT: AAAAAA EX : E BND, SE BND R AN 0005 00332 NONE POINT TO POINT DME/DME/IRU MINIMUM ENROUTE ALTITUDE (MEA- OPPOSITE DIRECTION) FORMAT: NNNNN OR BLANKS EX : 12000 L AN 0006 00337 NONE POINT TO POINT DME/DME/IRU MINIMUM ENROUTE DIRECTION (MEA- OPPOSITE DIRECTION) FORMAT: AAAAAA EX: W BND, SW BND L AN 0001 00343 NONE DOGLEG(Y/N) (A TURN POINT NOT AT A NAVAID) R N 0005 00344 NONE RNP FORMAT XX.XX R N 0007 00349 N/A RECORD SORT SEQUENCE NUMBER ******************************************************************** 'ATS2' RECORD TYPE - ATS AIRWAY POINT DESCRIPTION ******************************************************************* L AN 0004 00001 N/A RECORD TYPE INDICATOR. ATS2: ATS AIRWAY POINT DESCRIPTION L AN 0002 00005 DLID ATS AIRWAY DESIGNATION. L AN 0012 00007 DLID ATS AIRWAY ID L AN 0001 00019 DLID RNAV INDICATOR L AN 0001 00020 DLID ATS AIRWAY TYPE. R N 0005 00021 AR4 AIRWAY POINT SEQUENCE NUMBER. L AN 0040 00026 N/A NAVAID FACILITY/FIX NAME L AN 0025 00066 FX36 NAVAID FACILITY/FIX TYPE L AN 0015 00091 FX20 FIX TYPE - PUBLICATION CATEGORY **ENTERED FOR NAMED FIXES ONLY ('FIX' ENTERED)** L AN 0002 00106 N/A NAVAID FACILITY/FIX STATE P. O. CODE L AN 0002 00108 N/A ICAO REGION CODE - For FIX L AN 0014 00110 N/A NAVAID FACILITY/FIX LATITUDE L AN 0014 00124 N/A NAVAID FACILITY/FIX LONGITUDE L AN 0005 00138 FX93 FIX MINIMUM RECEPTION ALTITUDE(MRA) FORMAT: NNNNN OR BLANKS EX: 13000 L AN 0004 00143 NONE NAVAID IDENTIFIER EX: STS, HVR L AN 0057 00147 NONE RESERVED(FROM POINT-PART95) L AN 0145 00204 N/A BLANKS R N 0007 00349 N/A RECORD SORT SEQUENCE NUMBER ******************************************************************** 'ATS3' RECORD TYPE - CHANGEOVER TO POINT DESCRIPTION - (NAVAIDS) ******************************************************************* L AN 0004 00001 N/A RECORD TYPE INDICATOR. ATS3: CHANGEOVER TO POINT NAVAID L AN 0002 00005 DLID ATS AIRWAY DESIGNATION. L AN 0012 00007 DLID ATS AIRWAY ID L AN 0001 00019 DLID RNAV INDICATOR L AN 0001 00020 DLID ATS AIRWAY TYPE. R N 0005 00021 AR4 AIRWAY POINT SEQUENCE NUMBER L AN 0030 00026 N/A NAVAID FACILITY NAME L AN 0025 00056 N/A NAVAID FACILITY TYPE L AN 0002 00081 N2 NAVAID FACILITY STATE P. O. CODE L AN 0014 00083 N4 NAVAID FACILITY LATITUDE L AN 0014 00097 N5 NAVAID FACILITY LONGITUDE L AN 0238 00111 N/A BLANKS R N 0007 00349 N/A RECORD SORT SEQUENCE NUMBER ******************************************************************** 'ATS4' RECORD TYPE - ATS AIRWAY POINT REMARKS TEXT ******************************************************************* L AN 0004 00001 N/A RECORD TYPE INDICATOR. ATS4: ATS AIRWAY REMARKS TEXT L AN 0002 00005 DLID ATS AIRWAY DESIGNATION. L AN 0012 00007 DLID ATS AIRWAY ID L AN 0001 00019 DLID RNAV INDICATOR L AN 0001 00020 DLID ATS AIRWAY TYPE. R N 0005 00021 AR4 AIRWAY POINT SEQUENCE NUMBER L AN 0200 00026 N/A REMARKS TEXT L AN 0123 00226 N/A BLANKS R N 0007 00349 N/A RECORD SORT SEQUENCE NUMBER ******************************************************************* 'ATS5' RECORD TYPE - CHANGEOVER POINT EXCEPTION TEXT ******************************************************************* L AN 0004 00001 N/A RECORD TYPE INDICATOR. ATS5: CHANGEOVER POINT EXCEPTION TEXT L AN 0002 00005 DLID ATS AIRWAY DESIGNATION. L AN 0012 00007 DLID ATS AIRWAY ID L AN 0001 00019 DLID RNAV INDICATOR L AN 0001 00020 DLID AIRWAY TYPE. R N 0005 00021 AR4 AIRWAY POINT SEQUENCE NUMBER L AN 0200 00026 N/A REMARKS TEXT L AN 0123 00226 N/A BLANKS R N 0007 00349 N/A RECORD SORT SEQUENCE NUMBER ******************************************************************* 'RMK ' RECORD TYPE - ATS AIRWAY REMARK TEXT ******************************************************************* L AN 0004 00001 N/A RECORD TYPE INDICATOR. RMK : ATS AIRWAY REMARK TEXT L AN 0002 00005 DLID ATS AIRWAY DESIGNATION. L AN 0012 00007 DLID ATS AIRWAY ID L AN 0001 00019 DLID RNAV INDICATOR L AN 0001 00020 DLID AIRWAY TYPE. R N 0003 00021 N/A REMARK SEQUENCE NUMBER L AN 0005 00024 N/A REMARK REFERENCE BLANK - GENERAL REMARK ID - REMARK REFERENCES ATS AIRWAY ID TYPE - REMARK REFERENCES ATS AIRWAY TYPE RNAV - REMARK REFERENCES RNAV INDICATOR L AN 0200 00029 N/A REMARKS TEXT L AN 0120 00229 N/A BLANKS R N 0007 00349 N/A RECORD SORT SEQUENCE NUMBER