NAVIGATION SYSTEM DATABASE 
ARINC SPECIFICATION 424-20 
PUBLISHED:  December 5, 2011 
 
 
 
 
DOCUMENT 
 
 
AN  
Prepared by AEEC 
Published by 
AERONAUTICAL RADIO, INC. 
2551 RIVA ROAD, ANNAPOLIS, MARYLAND 21401-7435 
 
 
DISCLAIMER 
 
THIS DOCUMENT IS BASED ON MATERIAL SUBMITTED BY VARIOUS PARTICIPANTS 
DURING THE DRAFTING PROCESS. NEITHER AEEC, AMC, FSEMC NOR ARINC HAS 
MADE ANY DETERMINATION WHETHER THESE MATERIALS COULD BE SUBJECT TO 
VALID  CLAIMS  OF  PATENT,  COPYRIGHT  OR  OTHER  PROPRIETARY  RIGHTS  BY 
THIRD  PARTIES,  AND  NO  REPRESENTATION  OR  WARRANTY,  EXPRESS  OR 
IMPLIED, IS MADE IN THIS REGARD.  
 
ARINC  INDUSTRY  ACTIVITIES  USES  REASONABLE  EFFORTS  TO  DEVELOP  AND 
MAINTAIN THESE DOCUMENTS.  HOWEVER, NO CERTIFICATION OR WARRANTY IS 
MADE AS TO THE TECHNICAL ACCURACY OR SUFFICIENCY OF THE DOCUMENTS, 
THE  ADEQUACY,  MERCHANTABILITY,  FITNESS  FOR  INTENDED  PURPOSE  OR 
SAFETY  OF  ANY  PRODUCTS,  COMPONENTS,  OR  SYSTEMS  DESIGNED,  TESTED, 
RATED, INSTALLED OR OPERATED IN ACCORDANCE WITH ANY ASPECT OF THIS 
DOCUMENT  OR  THE  ABSENCE  OF  RISK  OR  HAZARD  ASSOCIATED  WITH  SUCH 
PRODUCTS,  COMPONENTS,  OR  SYSTEMS.    THE  USER  OF  THIS  DOCUMENT 
ACKNOWLEDGES THAT IT SHALL BE SOLELY RESPONSIBLE FOR ANY LOSS, CLAIM 
OR DAMAGE THAT IT MAY INCUR IN CONNECTION WITH ITS USE OF OR RELIANCE 
ON  THIS  DOCUMENT,  AND  SHALL  HOLD  ARINC,  AEEC,  AMC,  FSEMC  AND  ANY 
PARTY  THAT  PARTICIPATED  IN  THE  DRAFTING  OF  THE  DOCUMENT  HARMLESS 
AGAINST ANY CLAIM ARISING FROM ITS USE OF THE STANDARD. 
 
THE  USE  IN  THIS  DOCUMENT  OF  ANY  TERM,  SUCH  AS  SHALL  OR  MUST,  IS  NOT 
INTENDED  TO  AFFECT  THE  STATUS  OF  THIS  DOCUMENT  AS  A  VOLUNTARY 
STANDARD  OR  IN  ANY  WAY  TO  MODIFY  THE  ABOVE  DISCLAIMER.    NOTHING 
HEREIN  SHALL  BE  DEEMED  TO  REQUIRE  ANY  PROVIDER  OF  EQUIPMENT  TO 
INCORPORATE ANY ELEMENT OF THIS STANDARD IN ITS PRODUCT.  HOWEVER, 
VENDORS  WHICH  REPRESENT  THAT  THEIR  PRODUCTS  ARE  COMPLIANT  WITH 
THIS STANDARD  SHALL BE DEEMED ALSO TO HAVE  REPRESENTED THAT THEIR 
PRODUCTS CONTAIN OR CONFORM TO THE FEATURES THAT ARE DESCRIBED AS 
MUST OR SHALL IN THE STANDARD.   
 
ANY  USE  OF  OR  RELIANCE  ON  THIS  DOCUMENT  SHALL  CONSTITUTE  AN 
ACCEPTANCE THEREOF “AS IS” AND BE SUBJECT TO THIS DISCLAIMER. 
 
This document is published information as defined by 15 CFR Section 734.7 of the Export Administration Regulations (EAR).  As publicly available technology under 15 CFR 74.3(b)(3), it is not 
subject to the EAR and does not have an ECCN.  It may be exported without an export license.  
©2011 BY 
AERONAUTICAL RADIO, INC. 
2551 RIVA ROAD ANNAPOLIS, MARYLAND 
21401-7435 USA 
ARINC SPECIFICATION 424-20 
NAVIGATION SYSTEM DATABASE 
Published:  December 5, 2011
Prepared by the AEEC 
Summary of Document Supplements 
Adopted by the AEEC Executive Committee 
 
Specification 424 
 
Supplement 
Specification 424-1 
Specification 424-2 
Specification 424-3 
Specification 424-4 
Specification 424-5 
Specification 424-6 
Specification 424-7 
Specification 424-8 
Specification 424-9 
Specification 424-10 
Specification 424-11 
Specification 424-12 
Specification 424-13 
Specification 424-14 
Specification 424-15 
Specification 424-16 
Specification 424-17 
Specification 424-18 
Specification 424-19 
Specification 424-20 
A description of the changes introduced by each supplement is included at the end of this document. 
Adoption Date 
June 19, 1980 
December 9, 1981 
November 4, 1982 
October 12, 1983 
October 10, 1984 
November 7, 1985 
October 8, 1986 
February 28, 1989 
October 26, 1989 
August 16, 1993 
August 16, 1983 
May 17, 1994 
May 23, 1995 
August 24, 1999 
January 12, 2000 
April 8, 2002 
May 5, 2004 
October 5, 2005 
October 22, 2008 
October 6, 2011 
May 21, 1975 
Published 
September 8, 1980 
February 5, 1982 
January 17, 1983 
November 10, 1983 
March 18, 1985 
January 31, 1986 
January 14, 1987 
October 15, 1989 
March 2, 1990 
August 20, 1993 
August 20, 1993 
September 15, 1994 
December 31, 1995 
February 11, 2000 
February 11, 2000 
August 30, 2002 
August 31, 2004 
November 23, 2005 
December 19, 2008 
December 12, 2011 
 
FOREWORD 
Aeronautical Radio, Inc., the AEEC, and ARINC Standards 
ARINC organizes aviation industry committees and participates in related industry 
activities that benefit aviation at large by providing technical leadership and guidance. 
These activities directly support aviation industry goals: promote safety, efficiency, 
regularity, and cost-effectiveness in aircraft operations. 
ARINC Industry Activities organizes and provides the secretariat for international aviation 
organizations (AEEC, AMC, FSEMC) which coordinate the work of aviation industry 
technical professionals and lead the development of technical standards for airborne 
electronic equipment, aircraft maintenance equipment and practices and flight simulator 
equipment and used in commercial, military, and business aviation. The AEEC, AMC, and 
FSEMC develop consensus-based, voluntary standards that are published by ARINC and 
are known as ARINC Standards. The use of ARINC Standards results in substantial 
technical and economic benefit to the aviation industry. 
There are three classes of ARINC Standards: 
a) ARINC Characteristics – Define the form, fit, function, and interfaces of avionics 
and other airline electronic equipment. ARINC Characteristics indicate to 
prospective manufacturers of airline electronic equipment the considered and 
coordinated opinion of the airline technical community concerning the requisites of 
new equipment including standardized physical and electrical characteristics to 
foster interchangeability and competition. 
b) ARINC Specifications – Are principally used to define either the physical packaging 
or mounting of avionics equipment, data communication standards, or a high-level 
computer language. 
c) ARINC Reports – Provide guidelines or general information found by the airlines to 
be good practices, often related to avionics maintenance and support. 
The release of an ARINC Standard does not obligate any organization or ARINC to 
purchase equipment so described, nor does it establish or indicate recognition or the 
existence of an operational requirement for such equipment, nor does it constitute 
endorsement of any manufacturer’s product designed or built to meet the ARINC 
Standard. 
In order to facilitate the continuous product improvement of this ARINC Standard, two 
forms are included in the back of this document: 
An Errata Report solicits any corrections to existing text or diagrams that may be included 
in a future Supplement to this ARINC Standard. 
An ARINC IA Project Initiation/Modification (APIM) form solicits any proposals for the 
addition of technical material to this ARINC Standard. 
 
ii 
ARINC SPECIFICATION 424 
TABLE OF CONTENTS 
1.0 
1.1 
1.1.1 
1.1.2 
1.2 
1.3 
1.3.1 
1.4 
2.0 
2.1 
2.2 
2.2.1 
2.2.2 
2.2.3 
2.2.4 
3.0 
3.1 
3.2 
3.2.1 
3.2.2 
3.2.2.1 
3.2.2.2 
3.2.3 
3.2.3.1 
3.2.3.2 
3.2.3.3 
3.2.3.4 
3.2.3.5 
3.2.3.6 
3.2.4 
3.2.4.1 
3.2.4.2 
3.2.4.3 
3.2.4.4 
3.2.4.5 
3.2.4.6 
3.2.4.7 
3.2.4.8 
3.2.4.9 
3.2.4.10 
3.2.4.11 
3.2.4.12 
3.2.4.13 
3.2.4.14 
3.2.4.15 
3.2.4.16 
3.2.4.17 
3.2.5 
3.2.5.1 
3.2.5.2 
INTRODUCTION ........................................................................................................... 1 
Purpose of this document .............................................................................................. 1 
Coverage of Flight Simulator Needs ......................................................................... 1 
Coverage of Flight Planning Needs ........................................................................... 1 
Data Format Standardization Philosophy ...................................................................... 2 
Organization of this Document ....................................................................................... 3 
Coverage of Helicopter Operation Needs ................................................................. 3 
Reference Documentation ............................................................................................. 3 
GLOSSARY OF TERMS ................................................................................................ 5 
Data Processing Terms ................................................................................................. 5 
Special Navigation Terms .............................................................................................. 5 
Special Data Terms ................................................................................................... 5 
Procedure and Route Terms ..................................................................................... 6 
Support Terms ........................................................................................................... 8 
Precision RNAV Terms ............................................................................................. 9 
NAVIGATION DATA .................................................................................................... 11 
User File Organization ................................................................................................. 11 
Master Airline User File Content .................................................................................. 11 
General .................................................................................................................... 11 
Navaid Section (D) .................................................................................................. 11 
VHF Navaid Section (D), Subsection (Blank) ..................................................... 11 
NDB Navaid Section (D), Subsection (B) ........................................................... 11 
Enroute Section ....................................................................................................... 12 
Enroute Waypoint Section (E), Subsection (A) ................................................... 12 
Enroute Airway Marker Section (E), Subsection (M) .......................................... 12 
Holding Patterns (E), Subsection (P) .................................................................. 12 
Enroute Airways Section (E), Subsection (R) ..................................................... 12 
Enroute Airways Restrictions Section (E), Subsection (U) ................................. 12 
Enroute Communications Section (E), Subsection  (V) ...................................... 12 
Airport Section (P) ................................................................................................... 12 
Airport Reference Points Section (P), Subsection (A) ........................................ 12 
Airport Gates Section (P), Subsection (B) .......................................................... 12 
Airport Terminal Waypoints Section (P), Subsection (C) .................................... 13 
Airport Standard Instrument Departures (SIDs) Section (P), Subsection (D) ..... 13 
Airport Standard Terminal Arrival Routes (STARs) Section (P), Subsection (E) 14 
Airport Approaches Section (P), Subsection (F) ................................................. 14 
Airport Runway Section (P), Subsection (G) ...................................................... 14 
Airport and Heliport Localizer/Glide Slope Section (P), Subsection (I) ............... 14 
Airport and Heliport MLS Section (P), Subsection (L) ........................................ 14 
Airport and Heliport Marker/Localizer Section (P), Subsection (M) .................... 14 
MSA Section (P), Subsection (S) ....................................................................... 14 
Airport Communications Section (P), Subsection (V) ......................................... 14 
Airport and Heliport Terminal NDB Section (P), Subsection (N) ......................... 15 
Airport SBAS Path Point Section (P), Subsection (P)......................................... 15 
Flight Planning Arrival/Departure Data Record Section (P), Subsection (R) ...... 15 
GNSS Landing System (GLS) Section (P), Subsection (T) ................................ 15 
Airport Terminal Arrival Altitude Section (P), Subsection (K) .............................. 15 
Company Route and Alternate Destination Section (R) .......................................... 15 
Company Route Section (R), Subsection (Blank)............................................... 15 
The Alternate Record Section (R), Subsection (A) ............................................. 15 
iii 
ARINC SPECIFICATION 424 
TABLE OF CONTENTS 
3.2.6 
3.2.6.1 
3.2.6.2 
3.2.6.3 
3.2.7 
3.2.7.1 
3.2.7.2 
3.2.8 
3.2.9 
3.2.10 
3.3 
3.3.1 
3.3.2 
3.3.3 
3.3.4 
3.3.5 
3.3.6 
3.3.7 
3.3.8 
3.3.9 
3.3.10 
3.3.11 
3.3.12 
4.0 
4.0.1 
4.1 
4.1.2 
4.1.2.1 
4.1.2.2 
4.1.2.3 
4.1.2.4 
4.1.2.5 
4.1.2.6 
4.1.3 
4.1.3.1 
4.1.3.2 
4.1.3.3 
4.1.3.4 
4.1.3.5 
4.1.4 
4.1.4.1 
4.1.4.2 
4.1.4.3 
4.1.4.4 
4.1.5 
4.1.5.1 
4.1.5.2 
4.1.6 
4.1.6.1 
4.1.6.2 
4.1.6.3 
Special Use Airspace Section (U) ........................................................................... 15 
Restrictive Airspace Section (U), Subsection (R) ............................................... 15 
FIR/UIR Section (U), Subsection (F) .................................................................. 15 
Controlled Airspace Section (U), Subsection (C)................................................ 16 
Cruising Tables Section (T) ..................................................................................... 16 
Cruising Tables Section (T), Subsection (C) ...................................................... 16 
Geographical Reference Table Section (T), Subsection (G) .............................. 16 
MORA Section (A), Subsection (S ) ........................................................................ 16 
Preferred Routes Section (E), Subsection (T) ......................................................... 16 
GBAS Path Point Section (P), Subsection (Q) ........................................................ 16 
Master Helicopter User File Content ............................................................................ 16 
General .................................................................................................................... 16 
Jointly and Specifically Used Sections/Subsections ............................................... 16 
Heliport Section (H), Subsection (A) ....................................................................... 17 
Heliport Terminal Waypoints Section (H), Subsection (C) ...................................... 17 
Heliport Standard Instrument Departures (SIDs) Section (H), Subsection (D) ........ 17 
Heliport Standard Terminal Arrival Routes (STARs) Section (H), Subsection (E) .. 17 
Heliport Approaches Section (H), Subsection (F) ................................................... 18 
Heliport MSA Section (H), Subsection (S) ............................................................... 18 
Heliport Communications Section (H), Subsection (V) ............................................ 18 
Helicopter Terminal Arrival Altitude Section (H), Subsection (K) ............................ 18 
Helicopter Operations Company Route Section (R), Subsection (H) ...................... 18 
Helicopter Operations SBAS Path Point Section (H), Subsection (P) ..................... 18 
NAVIGATION DATA – RECORD LAYOUT ................................................................. 19 
General .................................................................................................................... 19 
Master Airline User File ................................................................................................ 19 
VHF NAVAID Record (D) ........................................................................................ 19 
VHF NAVAID Primary Records .......................................................................... 20 
VHF NAVAID Continuation Records .................................................................. 20 
VHF NAVAID Simulation Continuation Records ................................................. 21 
VHF NAVAID Flight Planning Continuation Records .......................................... 21 
VHF NAVAID Flight Planning Continuation Records .......................................... 21 
VHF NAVAID Limitation Continuation Record .................................................... 21 
NDB NAVAID Record (DB or PN) ........................................................................... 22 
NDB NAVAID Primary Records .......................................................................... 23 
NDB NAVAID Continuation Records .................................................................. 23 
NDB NAVAID Simulation Continuation Record .................................................. 23 
NDB NAVAID Flight Planning Continuation Records ......................................... 24 
NDB NAVAID Flight Planning Continuation Records ......................................... 24 
Waypoint Record (EA) or (PC) ................................................................................ 24 
Waypoint Primary Records ................................................................................. 25 
Waypoint Continuation Records ......................................................................... 25 
Waypoint Flight Planning Continuation Records ................................................ 26 
Waypoint Flight Planning Continuation Records ................................................ 26 
Holding Pattern Records (EP) ................................................................................. 26 
Holding Pattern Primary Records ....................................................................... 27 
Holding Pattern Continuation Records ............................................................... 27 
Enroute Airways Records (ER) ............................................................................... 28 
Enroute Airways Primary Records ...................................................................... 28 
Enroute Airways Continuation Records .............................................................. 29 
Enroute Airways Flight Planning Continuation Records ..................................... 29 
iv 
ARINC SPECIFICATION 424 
TABLE OF CONTENTS 
Enroute Airways Flight Planning Continuation Records ..................................... 29 
Airport Records (PA) ............................................................................................... 30 
Airport Primary Records ..................................................................................... 30 
Airport Continuation Records ............................................................................. 31 
Airport Flight Planning Continuation Records ..................................................... 31 
Airport Flight Planning Continuation Records ..................................................... 31 
Airport Gate Records (PB) ...................................................................................... 31 
Airport Gate Primary Record .............................................................................. 32 
Airport Gate Continuation Records ..................................................................... 32 
Airport SID/STAR/Approach (PD, PE and PF) ........................................................ 32 
Airport SID/STAR/Approach Primary Records ................................................... 33 
Airport SID/STAR/ Approach Primary Extension Continuation Records ............ 35 
Airport SID/STAR/Approach Flight Planning Continuation Records ................... 36 
Airport SID/STAR Flight Planning Continuation Records ................................... 36 
Airport Procedure Data Continuation Record ..................................................... 37 
Runway Records (PG) ............................................................................................ 37 
Runway Primary Records ................................................................................... 38 
Runway Continuation Records ........................................................................... 38 
Runway Simulation Continuation Records ......................................................... 39 
Airport and Heliport Localizer and Glide Slope Records (PI) .................................. 39 
Airport and Heliport Localizer and Glide Slope Primary Records ....................... 40 
Airport and Heliport Localizer and Glide Slope Continuation Records ............... 40 
Airport and Heliport Localizer and Glide Slope Simulation Continuation  
Records ........................................................................................................ 41 
Company Route Records (R) .................................................................................. 41 
Company Route Primary Records ...................................................................... 42 
Airport and Heliport Localizer Marker Records (PM) ............................................... 43 
Airport and Heliport Localizer Marker Primary Records ..................................... 43 
Airport and Heliport Localizer Marker Continuation Records .............................. 43 
Airport Communications Records (PV) ................................................................... 44 
Airport Communications Primary Records.......................................................... 44 
Airport Communications Continuation Records .................................................. 45 
Airport Communications Continuation Records .................................................. 45 
Airport Communications Continuation Records .................................................. 46 
Airport Communications Continuation Records .................................................. 46 
Airways Marker Records (EM) ................................................................................ 46 
Airways Marker Primary Records ....................................................................... 47 
Airways Marker Continuation Records ............................................................... 47 
Cruising Tables Records (TC) ................................................................................. 47 
Cruising Table Primary Records ......................................................................... 48 
FIR/UIR Records (UF) ............................................................................................. 48 
FIR/UIR Primary Records ................................................................................... 49 
FIR/UIR Continuation Records ........................................................................... 49 
Restrictive Airspace Records (UR) .......................................................................... 49 
Restrictive Airspace Primary Records ................................................................ 50 
Restrictive Airspace Continuation Records ........................................................ 50 
Restrictive Airspace Flight Planning Continuation Record ................................. 51 
Grid MORA Records (AS) ....................................................................................... 51 
Grid MORA Primary Records ............................................................................. 52 
Airport MSA (Minimum Sector Altitude) Records (PS) ............................................ 52 
Airport MSA Primary Records ............................................................................ 53 
4.1.6.4 
4.1.7 
4.1.7.1 
4.1.7.2 
4.1.7.3 
4.1.7.4 
4.1.8 
4.1.8.1 
4.1.8.2 
4.1.9 
4.1.9.1 
4.1.9.2 
4.1.9.3 
4.1.9.4 
4.1.9.5 
4.1.10 
4.1.10.1 
4.1.10.2 
4.1.10.3 
4.1.11 
4.1.11.1 
4.1.11.2 
4.1.11.3 
4.1.12 
4.1.12.1 
4.1.13 
4.1.13.1 
4.1.13.2 
4.1.14 
4.1.14.1 
4.1.14.2 
4.1.14.3 
4.1.14.4 
4.1.14.5 
4.1.15 
4.1.15.1 
4.1.15.2 
4.1.16 
4.1.16.1 
4.1.17 
4.1.17.1 
4.1.17.2 
4.1.18 
4.1.18.1 
4.1.18.2 
4.1.18.3 
4.1.19 
4.1.19.1 
4.1.20 
4.1.20.1 
v 
ARINC SPECIFICATION 424 
TABLE OF CONTENTS 
4.1.20.2 
4.1.20.3 
4.1.21 
4.1.21.1 
4.1.21A.1 
4.1.21A.2 
4.1.21B.1 
4.1.21C.1 
4.1.21C.2 
4.1.21.2 
4.1.22 
4.1.22.1 
4.1.22.2 
4.1.23 
4.1.23.1 
4.1.23.2 
4.1.23.3 
4.1.23.4 
4.1.24 
4.1.24.1 
4.1.24.2 
4.1.24.3 
4.1.25 
4.1.25.1 
4.1.25.2 
4.1.26 
4.1.26.1 
4.1.26.2 
4.1.27 
4.1.27.1 
4.1.27.2 
4.1.27.3 
4.1.28 
4.1.28.1 
4.1.28.2 
4.1.29 
4.1.29.1 
4.1.29.2 
4.1.30 
4.1.30.1 
4.1.31 
4.1.31.1 
4.1.31.2 
4.1.32 
4.1.32.1 
4.1.33 
4.1.33.1 
4.1.34 
4.1.35 
4.1.35.1 
Airport MSA Primary Record Extension ............................................................. 54 
Airport MSA Continuation Records ..................................................................... 54 
Enroute Airways Restriction Records (EU) ............................................................. 54 
Enroute Airways Restriction Altitude Exclusion Primary Records ...................... 55 
Enroute Airways Restriction Note Restriction Primary Records ......................... 56 
Enroute Airways Restriction Note Restriction Continuation Records ................. 56 
Enroute Airways Restriction Seasonal Closure Primary Records ...................... 57 
Enroute Airways Restriction Cruising Table Replacement Primary Records ..... 58 
Enroute Airways Restriction Cruising Table Replacement Continuation  
Records ........................................................................................................ 59 
Enroute Airways Restriction Altitude Exclusion Continuation Records ............... 59 
Airport and Heliport MLS (Azimuth, Elevation and Back Azimuth) Records (PL) .... 60 
Airport and Heliport MLS Primary Records......................................................... 60 
Airport and Heliport MLS Continuation Records ................................................. 61 
Enroute Communications Records (EV) ................................................................. 62 
Enroute Communications Primary Records........................................................ 62 
Enroute Communications Continuation Records ................................................ 63 
Enroute Communications Continuation Records ................................................ 63 
Enroute Communications Continuation Records ................................................ 63 
Preferred Routes Records (ET) ............................................................................... 64 
Preferred Route Primary Records ...................................................................... 64 
Preferred Route Continuation Records .............................................................. 65 
Preferred Route Continuation Record (ET) ........................................................ 65 
Controlled Airspace Records (UC) .......................................................................... 65 
Controlled Airspace Primary Records ................................................................ 66 
Controlled Airspace Continuation Records ......................................................... 67 
Geographical Reference Table Records (TG) ......................................................... 67 
Geographical Reference Table Primary Records (TG) ....................................... 68 
Geographical Reference Table Continuation Records ....................................... 68 
Flight Planning Arrival/Departure Data Records (PR) ............................................. 68 
Flight Planning Primary Records ........................................................................ 69 
Flight Planning Continuation Records ................................................................ 70 
Flight Planning Continuation Records ................................................................ 70 
Airport SBAS Path Point Records (PP) ................................................................... 71 
Airport SBAS Path Point Primary Records ......................................................... 71 
Path Point Continuation Records ....................................................................... 72 
GLS Record (PT) ..................................................................................................... 72 
GLS Primary Records ......................................................................................... 73 
GLS Continuation Records ................................................................................. 73 
Alternate Record (RA) ............................................................................................. 74 
Alternate Primary Records ................................................................................. 74 
Airport TAA (PK) ...................................................................................................... 74 
Airport TAA Primary Records ............................................................................. 75 
Airport Terminal Arrival Altitude Continuation Records ...................................... 76 
TACAN-Only NAVAID Record (DT) ........................................................................ 76 
TACAN-Only NAVAID Primary Records ............................................................. 77 
Special Activity Area (ES) ....................................................................................... 77 
Special Activity Area Primary Record ................................................................. 78 
Communication Type Translation (TV) .................................................................... 78 
GBAS Path Point Record (PQ) ................................................................................ 78 
GBAS Path Point Primary Records .................................................................... 79 
vi