
                   TERMINAL COMMUNICATIONS SERVICES
                        DATA BASE RECORD LAYOUT
                              (TWR-FILE)
  
INFORMATION EFFECTIVE DATE: 04/05/2012 CHARTING CYCLE   
 
    RECORD FORMAT: FIXED  
    LOGICAL RECORD LENGTH: 1608
 
  
FILE STRUCTURE DESCRIPTION  
--------------------------  
  
    THIS FILE CONTAINS ALL AIRPORTS THAT HAVE OR ARE PROVIDED  
    TERMINAL COMMUNICATIONS.  IT INCLUDES AIRPORTS WITH VISUAL  
    FLIGHT RULES(VFR) AND INSTRUMENT FLIGHT RULES(IFR) TOWERS, AND  
    AIRPORTS HAVING TERMINAL COMMUNICATIONS PROVIDED BY AIR ROUTE  
    TRAFFIC CONTROL CENTERS AND FLIGHT SERVICE STATIONS.  
  
    WHEN A TERMINAL COMMUNICATIONS FACILITY(MASTER AIRPORT) PROVIDES  
    SERVICES FOR A SATELLITE AIRPORT THE FREQUENCY/USE INFORMATION FOR  
    APPROACH/DEPARTURE CONTROL IS CONTAINED IN RECORD TWR7 AND THAT  
    RECORD IS WITH THE MASTER AIRPORT THAT PROVIDES THE SERVICE.  
  
    THE LOCATION IDENTIFIER IN RECORD TWR7 POINTS TO THE SAT-  
    TELLITE AIRPORT BEING PROVIDED APPROACH/DEPARTURE SERVICE.  
  
    THERE ARE A VARIABLE NUMBER OF FIXED LENGTH RECORDS FOR EACH  
    TERMINAL COMMUNICATIONS FACILITY.  THE NUMBER OF RECORDS IS  
    DETERMINED BY (1) OPERATING HOURS, (2) THE AMOUNT OF TEXT NEEDED  
    TO DESCRIBE THE COMMUNICATIONS FREQUENCIES AND THEIR USES,  
    (3) SERVICES PROVIDED TO SATELLITE AIRPORTS, (4) DIFFERENT TYPES  
    OF RADAR AIRPORTS, (5) THE AMOUNT OF TEXTUAL REMARKS PERTAINING TO  
    THE TERMINAL COMMUNICATION FACILITY, AND (6) THE NUMBER OF  
    SATELLITE AIRPORTS BEING PROVIDED SERVICE FROM A TERMINAL  
    COMMUNICATIONS FACILITY.  
  
    THE RECORDS ARE IDENTIFIED BY A RECORD TYPE INDICATOR (TWR1,  
    TWR2, TWR3, TWR4, TWR5, TWR6, TWR7, TWR8, TWR9) AND THE TERMINAL
    COMMUNICATIONS IDENTIFIER FACILITY.  
  
    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.

    THE FILE IS SORTED BY: TERMINAL COMMUNICATIONS FACILITY IDENTIFIER  
  
DESCRIPTION OF THE RECORD TYPES  
-------------------------------  
 
        - A TWR1 RECORD CONTAINS THE TERMINAL COMMUNICATIONS FACILITY  
          GENERAL DESCRIPTIVE LOCATION AND OPERATION INFORMATION.  THE  
          PRIMARY KEY FOR THIS AND ALL OTHER RECORDS IS THE FOUR  
          CHARACTER ALPHANUMERIC LOCATION IDENTIFIER CODE.  (THERE IS  
          ALWAYS ONE TWR1 RECORD).  
  
        - THE TWR2 RECORD(S) CONTAIN(S) THE DESCRIPTION OF THE OPERATING  
          HOURS OF THE FACILITY.  THERE CAN BE 0 OR 1 TWR2 RECORDS.  
  
        - THE TWR3 RECORD(S) CONTAIN(S) THE COMMUNICATIONS FREQUENCIES  
          AND THEIR USE.  TWR3 RECORD(S) MAY OR MAY NOT EXIST.  
  
        - THE TWR4 RECORD(S) DEFINE(S) THE TYPE OF SERVICE(S) PROVIDED  
          BY THE TERMINAL COMMUNICATIONS FACILITY(MASTER AIRPORT) TO A  
          SATELLITE AIRPORT AND THE SERVICES AVAILABLE AT THE TOWER.  
          TWR4 RECORD(S) MAY OR MY NOT EXIST.  
  
        - THE TWR5 RECORD(S) CONTAIN(S) INFORMATION ON EXISTENCE OF  
          RADAR AND THE TYPE OF RADAR AT THE FACILITY.  
          TWR5 RECORD(S) THERE MAY BE 0 OR 1 TWR5 RECORDS.  
  
        - THE TWR6 RECORD(S) CONTAIN(S) TEXTUAL REMARKS PERTAINING  
          TO TERMINAL COMMUNICATIONS FACILITY.  
          TWR6 RECORD(S) MAY OR MAY NOT EXIST.  
  
        - THE TWR7 RECORD(S) CONTAIN(S) GENERAL DESCRIPTIVE  
          LOCATION AND OPERATION INFORMATION FOR A SATELLITE  
          AIRPORT ASSOCIATED WITH THE TERMINAL COMMUNICATIONS FACILITY  
          (MASTER AIRPORT).  THERE IS ONE TWR7 RECORD FOR EACH FREQUENCY  
          AND USE SERVICED BY A MASTER AIRPORT.

        - THE TWR8 RECORD CONTAINS INFORMATION ON CLASS B/C/D/E AIRSPACE  
          AND AIRSPACE HOURS. TWR8 RECORD WILL REPORT ONLY IF ONE OR MORE
          AIRSPACE CLASSES HAVE 'Y' VALUE. NULL VALUES WILL REPORT AS BLANK.   
          THERE MAY BE 0 OR 1 TWR8 RECORDS.  

        - THE TWR9 RECORD CONTAINS ATIS DATA
          THERE MAY BE 1 OR MORE TWR9 RECORDS.  

          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 THE RECORD.  
             4.  THE UNIQUE RECORD KEY IS THE LOCATION IDENTIFIER  
             5.  LATITUDE AND LONGITUDE INFORMATION IS REPRESENTED  
                 IN TWO WAYS:  
                 A.  FORMATTED:  
                     ----------  
                     LATITUDE     DD-MM-SS.SSSH  
                     LONGITUDE    DDD-MM-SS.SSSH  
  
                 WHERE:           DD IS DEGREES  
                                  MM IS MINUTES  
                                  SS.SSS IS SECONDS  
                                  H IS DECLINATION  
                 EXAMPLES:        LAT-     39-06-51.07N  
                                  LONG-    075-27-54.660W  
  
                 B.  IN ALL SECONDS:  
                     ---------------  
                     LATITUDE AND LONGITUDE      SSSSSS.SSSH  
   
                     WHERE    SSSSSS.SSS IS THE DEG/MIN/SEC CONVERTED  
                              TO ALL SECONDS  
                              H IS THE DECLINATION  
  
                     EXAMPLE: LAT-     140811.070N  
                              LONG-    27164.66W  
  
  
             6.  THE FOLLOWING TERMS ARE USED INTERCHANGEABLY IN THIS  
                 DOCUMENT.  
                 A.  TOWER/TERMINAL COMMUNICATIONS FACILITY  
                 B.  LANDING FACILITY/AIRPORT  
  
  
***********************************************************************  
*                                                                     *  
*                    'TWR1' RECORD TYPE  BASE DATA                    *  
*                                                                     *  
***********************************************************************  
  
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    4  0001  NONE    RECORD TYPE INDICATOR.  
                         TWR1 - BASIC TERMINAL COMMUNICATIONS FACILITY  
                                INFORMATION  
  
L AN 0004 00005  DLID    TERMINAL COMMUNICATIONS FACILITY IDENTIFIER  
                          CONSIST OF:  
                          ALPHABETIC OR ALPHA-NUMERIC LOCATION  
                          IDENTIFIER. (EX: FME)  
  
L AN 0010 00009  NONE    INFORMATION EFFECTIVE DATE (MM/DD/YYYY)  
                          THIS DATE COINCIDES WITH THE 56-DAY  
                          CHARTING AND PUBLICATION CYCLE DATE.  
  
                         ------------------------------------------  
                              LANDING FACILITY(AIRPORT) DATA  
                         ------------------------------------------  
  
L AN 0011 00019  DLID    LANDING FACILITY SITE NUMBER  
                          UNIQUE IDENTIFYING NUMBER ASSIGNED TO  
                          THE AIRPORT  
                          (EX: 01818.*A, 03001.*H)  
  
                          SUFFIX TYPE         LANDING FACILITY  
                          -----------         ----------------  
  
                               A               AIRPORT  
   
 
 
                               B               BALLOONPORT  
                               C               SEAPLANE BASE  
                               G               GLIDERPORT  
                               H               HELIPORT  
                               S               STOLPORT  
                               U               ULTRALIGHT  
  
L AN 0003 00030  A6      FAA REGION CODE  
                          CODE    REGION NAME  
                          ----    -----------  
                          AAL     ALASKA  
                          ACE     CENTRAL  
                          AEA     EASTERN  
                          AGL     GREAT LAKES  
                          AIN     INTERNATIONAL  
                          ANE     NEW ENGLAND  
                          ANM     NORTHWEST MOUNTAIN  
                          ASO     SOUTHERN  
                          ASW     SOUTHWEST  
                          AWP     WESTERN-PACIFIC  
  
L AN 0030 00033  A4      ASSOCIATED STATE NAME  
                          (EX: CALIFORNIA)  
L AN 0002 00063  A4      ASSOCIATED STATE POST OFFICE  CODE  
                          (EX: CA)  
L AN 0040 00065  A1      ASSOCIATED CITY NAME  
                          (EX: LOS ANGELES)  
L AN 0050 00105  A2      OFFICIAL AIRPORT NAME  
                          (EX: EWARDS AFB)  
  
L AN 0014 00155  A19     AIRPORT REFERENCE POINT LATITUDE (FORMATTED)  
L AN 0011 00169  A19S    AIRPORT REFERENCE POINT LATITUDE (SECONDS)  
L AN 0014 00180  A20     AIRPORT REFERENCE POINT LONGITUDE (FORMATTED)  
L AN 0011 00194  A20S    AIRPORT REFERENCE POINT LONGITUDE (SECONDS)  
L AN 0004 00205  A86     TIE-IN FLIGHT SERVICE STATION (FSS) IDENTIFIER  
                          (EX: WJF)  
L AN 0030 00209  A86     TIE-IN FLIGHT SERVICE STATION (FSS) NAME  
                          (EX: LANCASTER)  
  
                         ---------------------------------------------  
                             TERMINAL COMMUNICATIONS FACILITY DATA  
                         ---------------------------------------------  
  
L AN 0012 00239  TA9     FACILITY TYPE  
                          (ATCT, NON-ATCT, ATCT-A/C, ATCT-RAPCON,  
                           ATCT-RATCF, ATCT-TRACON, TRACON, ATCT-TRACAB,  
                           ATCT-CERAP)  
  
                          TYPE CODE         DESCRIPTION  
                          ---------         -----------  
                          ATCT              AIR TRAFFIC CONTROL TOWER.  
  
                          NON-ATCT          NON-AIR TRAFFIC CONTROL  
                                            TOWER.  
                                            AIRPORT BEING PROVIDED  
   
 
 
                                            IFR (INSTRUMENT FLIGHT  
                                            RULES) SERVICE.  
  
                          ATCT-A/C          AIR TRAFFIC CONTROL TOWER  
                                            PLUS APPROACH CONTROL.  
  
                          ATCT-RAPCON       AIR TRAFFIC CONTROL TOWER  
                                            PLUS RADAR APPROACH CONTROL  
                                            (AIR FORCE OPERATES ATCT/FAA  
                                            OPERATES APPROACH CONTROL)  
  
                          ATCT-RATCF        AIR TRAFFIC CONTROL TOWER  
                                            PLUS RADAR APPROACH CONTROL.  
                                            (NAVY OPERATES ATCT/ FAA  
                                            OPERATES APPROACH CONTROL)  
  
                          ATCT-TRACON       AIR TRAFFIC CONTROL TOWER  
                                            PLUS TERMINAL RADAR APPROACH  
                                            CONTROL.  
  
                          TRACON            TERMINAL RADAR APPROACH  
                                            CONTROL.  
  
                          ATCT-TRACAB       AIR TRAFFIC CONTROL TOWER  
                                            PLUS TERMINAL RADAR CAB.  
  
                          ATCT-CERAP        AIR TRAFFIC CONTROL TOWER  
                                            PLUS CENTER RADAR APPROACH  
                                            CONTROL.  
  
L AN 0002 00251  TA55    NUMBER OF HOURS OF DAILY OPERATION  
                          (EX: 16, DD(DUSK TO DAWN))  
L AN 0003 00253  TA55    NUMBER OF HOURS OF DAILY OPERATION  
                         INDICATION OF REGULARITY. TOWER OPERATES 24  
                         UNLESS OTHERWISE INDICATED.  
  
                          CODE      DESCRIPTION  
                          ----      -----------  
                          WDO       WEEKDAYS ONLY  
                          WEO       WEEKENDS ONLY  
                          SEA       SUBJECT TO SEASONAL ADJUSTMENT  
                          WDE       WEEKDAYS, OTHER HOURS WEEKENDS  
                          WDS       WEEKDAYS, SUBJECT TO SEASONAL  
                                    ADJUSTMENT  
                          WES       WEEKENDS, SUBJECT TO SEASONAL  
                                    ADJUSTMENT  
  
  
L AN 0004 00256  TA34    MASTER AIRPORT LOCATION IDENTIFIER (EX: LAX)  
L AN 0050 00260  TA34    NAME OF MASTER AIRPORT FURNISHING SERVICES  
                         IF THIS FACILITY IS A SATELLITE AIRPORT.  
                          LEFT BLANK IF MASTER AIRPORT.  
                          (EX: LOS ANGELES INTL)  
L AN 0015 00310  TA38    DIRECTION FINDING EQUIPMENT (TYPE)  
  
   
 
 
                          TYPE  
                          ----  
  
                          VHF  
                          UHF  
                          VHF/UHF  
                          DOPPLER VHF  
                          DOPPLER VHF/UHF  
  
                         -----------------------------------------------  
                           TERMINAL COMMUNICATIONS FACILITY OFF AIRPORT  
                         -----------------------------------------------  
  
L AN 0050 00325  TA45    NAME OF ASSOCIATED LANDING FACILITY WHEN THE  
                         TERMINAL FACILITY IS NOT LOCATED ON THE  
                         AIRPORT OR WHEN LOCATED OUTSIDE OF THE  
                         UNITED STATES.  
                         (EX: NEW YORK TRACON)  
L AN 0040 00375  TA46    NAME OF THE ASSOCIATED CITY WHEN THE FACILITY  
                         NOT LOCATED ON THE AIRPORT OR WHEN LOCATED  
                         OUTSIDE OF THE UNITED STATES.  
                         (EX: NEW YORK)  
L AN 0020 00415  TA47    NAME OF THE STATE OR PROVINCE WHEN THE FACILITY  
                         NOT LOCATED ON THE AIRPORT OR WHEN LOCATED  
                         OUTSIDE OF THE UNITED STATES.  
                          (EX: NEW YORK)  
L AN 0025 00435  TA48    NAME OF STATE/COUNTRY WHEN FACILITY NOT LOCATED  
                         ON AIRPORT OR WHEN LOCATED OUTSIDE OF THE  
                         UNITED STATES.  
                          (EX: NEW YORK)  
L AN 0002 00460  TA48    COUNTRY/STATE  POST OFFICE CODE WHEN FACILITY  
                         NOT LOCATED ON AIRPORT OR WHEN  
                         LOCATED OUTSIDE OF THE UNITED STATES.  
                          (EX: NY)  
L AN 0003 00462  TA49    FAA REGION CODE WHEN THE FACILITY NOT LOCATED  
                         ON THE AIRPORT OR WHEN LOCATED OUTSIDE OF THE  
                         UNITED STATES.  
                          (EX: AEA)  
                         -----------------------------------------------  
                           LATITUDE/LONGITUDE DATA  
                         -----------------------------------------------  
  
L AN 0014 00465  TA32    AIRPORT SURVEILLANCE RADAR LATITUDE(FORMATTED)  
L AN 0011 00479  TA32    AIRPORT SURVEILLANCE RADAR LATITUDE (SECONDS)  
L AN 0014 00490  TA33    AIRPORT SURVEILLANCE RADAR LONGITUDE (FORMATTED)  
L AN 0011 00504  TA33    AIRPORT SURVEILLANCE RADAR LONGITUDE (SECONDS)  
L AN 0014 00515  TA39    LATITUDE OF DIRECTION FINDING ANTENNA (FORMATTED)  
L AN 0011 00529  TA39    LATITUDE OF DIRECTION FINDING ANTENNA (SECONDS)  
L AN 0014 00540  TA40    LONGITUDE OF DIRECTION FINDING ANTENNA(FORMATTED)  
L AN 0011 00554  TA40    LONGITUDE OF DIRECTION FINDING ANTENNA (SECONDS)  
  
                         -----------------------------------------------  
                             OPERATOR DATA  
                         -----------------------------------------------  
  
   
 
 
L AN 0040 00565  TA11    NAME OF THE AGENCY THAT OPERATES THE TOWER  
                         (EX: U.S. AIR FORCE)  
L AN 0040 00605  TA53    NAME OF THE AGENCY THAT OPERATES MILITARY  
                         OPERATIONS  
                         (EX: U. S. ARMY)  
L AN 0040 00645  TA20    NAME OF THE AGENCY THAT OPERATES THE PRIMARY  
                         APPROACH CONTROL FACILITY/FUNCTIONS  
                         (EX: FAA)  
L AN 0040 00685  TA23    NAME OF THE AGENCY OPERATING THE SECONDARY  
                         APPROACH CONTROL FACILITY/FUNCTIONS  
                         (EX: FAA)  
L AN 0040 00725  TA26    NAME OF THE AGENCY OPERATING THE PRIMARY  
                         DEPARTURE CONTROL FACILITY/FUNCTIONS  
                         (EX: FAA)  
L AN 0040 00765  TA29    NAME OF THE AGENCY OPERATING THE SECONDARY  
                         DEPARTURE CONTROL FACILITY/FUNCTIONS  
                         (EX: FAA)  
  
                         -----------------------------------------------  
                              RADIO CALL DATA  
                         -----------------------------------------------  
  
L AN 0026 00805  TA51    RADIO CALL USED BY PILOT TO CONTACT TOWER  
                         (EX: EDWARDS)  
L AN 0026 00831  TA52    RADIO CALL NAME FOR MILITARY OPERATIONS AT  
                         THIS AIRPORT (EX: CONFORM)  
L AN 0026 00857  TA19    RADIO CALL OF FACILITY THAT FURNISHES PRIMARY  
                         APPROACH CONTROL.  
                         (EX: EDWARDS)  
L AN 0026 00883  TA22    RADIO CALL OF FACILITY THAT TAKES OVER APPROACH  
                         CONTROL WHEN PRIMARY CONTROL IS A PART-TIME  
                         FACILITY.  ALSO USED TO INDICATE IF  
                          APPROACH CONTROL IS PROVIDED BY TWO  
                         DIFFERENT FACILITIES.  
                         (EX: LOS ANGELES CENTER)  
L AN 0026 00909  TA25    RADIO CALL OF FACILITY THAT FURNISHES PRIMARY  
                         DEPARTURE CONTROL.  ALSO USED TO INDICATE  
                         IF DEPARTURE CONTROL IS PROVIDED BY TWO  
                         DIFFERENT FACILITIES.  
                         (EX: EDWARDS)  
L AN 0026 00935  TA28    RADIO CALL OF FACILITY THAT TAKES OVER  
                         DEPARTURE CONTROL WHEN PRIMARY CONTROL IS A  
                         PART-TIME FACILITY.  ALSO USED TO INDICATE  
                         IF DEPARTURE CONTROL IS PROVIDED BY TWO  
                         DIFFERENT FACILITIES.  
                         (EX: LOS ANGELES CENTER)  
L AN 0648 00961  NONE    BLANK
  
   
************************************************************************  
*                                                                      *  
*                  'TWR2' OPERATION HOURS DATA                         *  
*                                                                      *  
************************************************************************  
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    4  0001  NONE    RECORD IDENTIFIER  
                         TWR2 - HOURS RECORD  
L AN 0004 00005  DLID    TERMINAL COMMUNICATIONS FACILITY IDENTIFIER  
L AN 0200 00009  TA42    HOURS OF OPERATION OF THE MILITARY  
                         PILOT-TO-METRO SERVICE (PMSV) LOCATED AT  
                         THE FACILITY (IF ANY) (IN LOCAL TIME)  
                         (EX:  PART-TIME)  
L AN 0200 00209  TA41    HOURS OF OPERATION OF THE MILITARY  
                         AIRCRAFT COMMAND POST (MACP) LOCATED AT  
                         THE FACILITY (IF ANY) (IN LOCAL TIME)  
                         (EX: 0800-1700)  
L AN 0200 00409  TA54    HOURS OF MILITARY OPERATIONS CONDUCTED  
                         EACH DAY.  
                         (EX: 0800-1630 TUE-SAT)  
L AN 0200 00609  TA21    HOURS OF OPERATION OF PRIMARY APPROACH  
                         CONTROL FACILITY. (IN LOCAL TIME)  
                         (EX: 0700-2200 MON-FRI; 0800-2100 SAT-SUN-HOL)  
L AN 0200 00809  TA24    HOURS OF OPERATION OF SECONDARY APPROACH  
                         CONTROL FACILITY. (IN LOCAL TIME)  
                         (EX: 2200-0700 MON-FRI; 2100-0800 SAT-SUN-HOL)  
L AN 0200 01009  TA27    HOURS OF OPERATION OF PRIMARY DEPARTURE  
                         CONTROL FACILITY.(IN LOCAL TIME)  
                         (EX: 0700-2200 MON-FRI; 0800-2100 SAT-SUN-HOL)  
L AN 0200 01209  TA30    HOURS OF OPERATION OF SECONDARY DEPARTURE  
                         CONTROL FACILITY.(IN LOCAL TIME)  
                         (EX: 2200-0700 MON-FRI; 2100-0800 SAT-SUN-HOL)  
L AN 0200 01409  TA15    HOURS OF TOWER OPERATION IN LOCAL TIME  
                         (0800-2100)  
 
   
************************************************************************  
*                                                                      *  
*         'TWR3' COMMUNICATIONS FREQUENCIES AND USE DATA               *  
*                      (MASTER AIRPORT USE ONLY)                       *  
*                                                                      *  
************************************************************************  
  
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    4  0001  NONE    RECORD IDENTIFIER  
                         TWR3 - FREQUENCY/USE RECORD  
L AN 0004 00005  DLID    TERMINAL COMMUNICATIONS FACILITY IDENTIFIER  
L AN 0044 00009  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(1) 
                         (EX: 126.6 (150-360) RUNWAY 33)  
L AN 0050 00053  TA13    FREQUENCY USE.(1)  
                         (EX: LCL/P APCH/S STAGE-II IC)  
L AN 0044 00103  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(2)  
L AN 0050 00147  TA13    FREQUENCY USE.(2)  
L AN 0044 00197  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(3)  
L AN 0050 00241  TA13    FREQUENCY USE.(3)  
L AN 0044 00291  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(4)  
L AN 0050 00335  TA13    FREQUENCY USE.(4)  
L AN 0044 00385  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(5)  
L AN 0050 00429  TA13    FREQUENCY USE.(5)  
L AN 0044 00479  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(6)  
L AN 0050 00523  TA13    FREQUENCY USE.(6)  
L AN 0044 00573  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(7)  
L AN 0050 00617  TA13    FREQUENCY USE.(7)  
L AN 0044 00667  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(8)  
L AN 0050 00711  TA13    FREQUENCY USE.(8)  
L AN 0044 00761  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(9)  
L AN 0050 00805  TA13    FREQUENCY USE.(9)  
L AN 0060 00855  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(1) 
                         (NOT TRUNCATED) (EX: 126.6 (150-360) RUNWAY 33)  
L AN 0060 00915  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(2) 
                         (NOT TRUNCATED) (EX: 126.6 (150-360) RUNWAY 33)  
L AN 0060 00975  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(3) 
                         (NOT TRUNCATED) (EX: 126.6 (150-360) RUNWAY 33)  
L AN 0060 01035  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(4) 
                         (NOT TRUNCATED) (EX: 126.6 (150-360) RUNWAY 33)  
L AN 0060 01095  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(5) 
                         (NOT TRUNCATED) (EX: 126.6 (150-360) RUNWAY 33)  
L AN 0060 01155  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(6) 
                         (NOT TRUNCATED) (EX: 126.6 (150-360) RUNWAY 33)  
L AN 0060 01215  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(7) 
                         (NOT TRUNCATED) (EX: 126.6 (150-360) RUNWAY 33)  
L AN 0060 01275  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(8) 
                         (NOT TRUNCATED) (EX: 126.6 (150-360) RUNWAY 33)  
L AN 0060 01335  TA13    FREQUENCY(S) FOR MASTER AIRPORT USE ONLY AND  
                         SECTORIZATION BASED ON MASTER AIRPORT OR AIRWAY 
                         BOUNDARIES, OR LIMITATIONS BASED ON RUNWAY USAGE.(9) 
                         (NOT TRUNCATED) (EX: 126.6 (150-360) RUNWAY 33)
L AN 0214 01395  NONE    BLANK  
     
************************************************************************  
*                                                                      *  
*      'TWR4' SERVICES PROVIDED TO SATELLITE AIRPORT DATA              *  
*                                                                      *  
************************************************************************  
  
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    4  0001  NONE    RECORD IDENTIFIER  
                         TWR4 - AIRPORT SERVICES RECORD  
L AN 0004 00005  DLID    TERMINAL COMMUNICATIONS FACILITY IDENTIFIER  
L AN 0100 00009  TA35    MASTER AIRPORT SERVICES.  
                         (EX: TC APCH CTL ON SECTORIZED FREQ'S)  
L AN 1500 00109  NONE    BLANK  
     
************************************************************************  
*                                                                      *  
*       'TWR5' INDICATION OF RADAR OR TYPE OF RADAR DATA               *  
*                                                                      *  
************************************************************************  
  
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    4  0001  NONE    RECORD IDENTIFIER  
                         TWR5 - RADAR RECORD  
L AN 0004 00005  DLID    TERMINAL COMMUNICATIONS FACILITY IDENTIFIER  
L AN 0009 00009  TA19    /RADAR/ OR /NON-RADAR/ PRIMARY APPROACH CALL  
                          (EX: RADAR, NON-RADAR, RAPCON)  
L AN 0009 00018  TA22    /RADAR/ OR /NON-RADAR/ SECONDARY APPROACH CALL  
                          (EX: RADAR, NON-RADAR, RAPCON)  
L AN 0009 00027  TA25    /RADAR/ OR /NON-RADAR/ PRIMARY DEPARTURE CALL  
                          (EX: RADAR, NON-RADAR, RAPCON)  
L AN 0009 00036  TA28    /RADAR/ OR /NON-RADAR/ SECONDARY DEPARTURE CALL  
                          (EX: RADAR, NON-RADAR, RAPCON)-  
L AN 0010 00045  TA31    TYPE OF RADAR AT THE TOWER(1)  
                          (EX: ASR-8)  
L AN 0200 00055  TA31    RADAR HOURS OF OPERATION(1) (EX: 0700-2300)  
L AN 0010 00255  TA31    TYPE OF RADAR AT THE TOWER(2)  
L AN 0200 00265  TA31    RADAR HOURS OF OPERATION(2)  
L AN 0010 00465  TA31    TYPE OF RADAR AT THE TOWER(3)  
L AN 0200 00475  TA31    RADAR HOURS OF OPERATION(3)  
L AN 0010 00675  TA31    TYPE OF RADAR AT THE TOWER(4)  
L AN 0200 00685  TA31    RADAR HOURS OF OPERATION(4)  
  
                         TYPE CODE   DESCRIPTION  
                         ---------   -----------  
                         ASR         AIRPORT SURVEILLANCE RADAR  
                         GCA         GROUND CONTROL APPROACH  
                         PAR         PRECISION APPROACH RADAR  
                         ASR/PAR     AIRPORT SURVEILLANCE RADAR PLUS  
                                     PRECISION APPROACH RADAR  
                         ASR-8       NUMBER DENOTES TYPE OF AIRPORT  
                                     SURVEILLANCE RADAR.  
L AN 0724 00885  NONE    BLANK  
     
************************************************************************  
*                                                                      *  
*      'TWR6' TERMINAL COMMUNICATIONS FACILITY REMARKS DATA            *  
*                                                                      *  
************************************************************************  
  
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    4  0001  NONE    RECORD IDENTIFIER  
                         TWR6 - REMARKS RECORD  
L AN 0004 00005  DLID    TERMINAL COMMUNICATIONS FACILITY IDENTIFIER  
L AN 0005 00009  NONE    TOWER ELEMENT NUMBER  
                         (EX: 1)  
L AN 0800 00014  NONE    TOWER REMARK TEXT  
                         (EX: APCH/DEP SERVICE PROVIDED BY INDIANAPOLIS  
                          ARTCC ON FREQS 132.6/281.4 (MERWYN RCAG).)  
L AN 0795 00814  NONE    BLANK  
  
   
************************************************************************  
*                                                                      *  
*                 'TWR7' SATELLITE AIRPORT DATA                        *  
*                                                                      *  
************************************************************************  
  
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    4  0001  NONE    RECORD IDENTIFIER  
                         TWR7 - SATELLITE AIRPORT RECORD  
L AN 0004 00005  DLID    TERMINAL COMMUNICATIONS FACILITY IDENTIFIER  
L AN 0044 00009  DLID    SATELLITE FREQUENCY (EX: 126.1)  
L AN 0050 00053  DLID    SATELLITE FREQUENCY USE (EX: APCH/P DEP/P)  
L AN 0011 00103  S6S     SATELLITE AIRPORT SITE NUMBER  
                         (EX: 02013.*A)  
L AN 0004 00114  A7      SATELLITE AIRPORT LOCATION IDENTIFIER  
                         (EX: PMD)  MAY BE USED AS A LINK TO  
                          TERMINAL COMMUNICATIONS FACILITY RECORD  
L AN 0003 00118  A6      SATELLITE FAA REGION CODE (EX: AWP)  
L AN 0030 00121  A4      SATELLITE ASSOCIATED STATE NAME  
                         (EX: CALIFORNIA)  
L AN 0002 00151  A4      SATELLITE ASSOCIATED STATE POST OFFICE CODE  
                         (EX: CA)  
L AN 0040 00153  A1      SATELLITE ASSOCIATED CITY (EX: PALMDALE)  
L AN 0050 00193  A2      SATELLITE ARPT NAME  
                         (EX:  PALMDALE PRODN FLT/TEST INSTLN PLANT 42)  
L AN 0014 00243  A19     AIRPORT LATITUDE(FORMATTED)  
L AN 0011 00257  A19S    AIRPORT LATITUDE (SECONDS)  
L AN 0014 00268  A20     AIRPORT LONGITUDE (FORMATTED)  
L AN 0011 00282  A20S    AIRPORT LONGITUDE (SECONDS)  
L AN 0004 00293  A86     FLIGHT SERVICE STATION IDENTIFIER (EX: WJF)  
L AN 0030 00297  A86     FLIGHT SERVICE STATION NAME  
                         (EX: LANCASTER)  
  
                         -----------------------------------------  
                             MASTER AIRPORT INFORMATION  
                         -----------------------------------------  
  
L AN 0011 00327  S021    MASTER AIRPORT INFORMATION (EX: 01526.8*A)  
  
                         AIRPORT TYPE      DESCRIPTION  
                         ------------      -----------  
  
                             A             AIRPORT  
                             B             BALLOONPORT  
                             C             SEAPLANE BASE  
                             G             GLIDERPORT  
                             H             HELIPORT  
                             U             ULTRALIGHT  
  
   
 
 
L AN 0003 00338  A6      MASTER AIRPORT FAA REGION CODE (EX: ACE)  
L AN 0030 00341  A4      MASTER AIRPORT ASSOCIATED STATE NAME  
                         (EX: CALIFORNIA)  
L AN 0002 00371  A4      MASTER AIRPORT ASSOCIATED STATE POST OFFICE  
                         CODE (EX: CALIFORNIA)  
L AN 0040 00373  A1      MASTER AIRPORT ASSOCIATED CITY (EX: EWARDS)  
L AN 0050 00413  A2      MASTER AIRPORT NAME  (EX: EDWARDS AFB)  
L AN 0060 00463  ????    SATELLITE FREQUENCY (EX: 126.1) (NOT TRUNCATED)  
L AN 1086 00523  NONE    BLANK  

************************************************************************  
*                                                                      *  
*           'TWR8' CLASS B/C/D/E AIRSPACE AND AIRSPACE HOURS DATA      *  
*                                                                      *  
************************************************************************  
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    4  0001  NONE    RECORD IDENTIFIER  
                         TWR8 - CLASS B/C/D/E AIRSPACE RECORD  
L AN 0004 00005  DLID    TERMINAL COMMUNICATIONS FACILITY IDENTIFIER 
L AN 0001 00009  ????    CLASS B AIRSPACE (EX: Y) 
L AN 0001 00010  ????    CLASS C AIRSPACE (EX: Y)  
L AN 0001 00011  ????    CLASS D AIRSPACE (EX: Y)  
L AN 0001 00012  ????    CLASS E AIRSPACE (EX: Y)  
L AN 0300 00013  ????    AIRSPACE HOURS  
                         (EX: 0800-1630 TUE-SAT)  
L AN 1296 00313  NONE    BLANK  


************************************************************************  
*                                                                      *  
*           'TWR9' AUTOMATIC TERMINAL INFORMATION SYSTEM (ATIS) DATA   *  
*                                                                      *  
************************************************************************  
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    4  0001  NONE    RECORD IDENTIFIER  
                         TWR9 - ATIS DATA
L AN 0004 00005  DLID    TERMINAL COMMUNICATIONS FACILITY IDENTIFIER 
R  N 0004 00009  NONE    ATIS SERIAL NUMBER
L AN 0200 00013  TA43    ATIS HOURS OF OPERATION IN LOCAL TIME
L AN 0100 00213  NONE    OPTIONAL DESCRIPTION OF PURPOSE, FULFILLED BY ATIS
L AN 0018 00313  NONE    ATIS PHONE NUMBER
L AN 1278 00331  NONE    BLANK  


