COVER SHEET TO AMENDMENT 73
INTERNATIONAL STANDARDS AND
RECOMMENDED PRACTICES
AERONAUTICAL
TELECOMMUNICATIONS
ANNEX 10
TO THE CONVENTION ON INTERNATIONAL CIVIL AVWTION
VOLUME I11
(PART I - DIGITAL DATA COMMUNICATION SYSTEMS;
PART U - VOICE COMMUNICATXON SYSTEMS)
FIRST EDITION OF VOLUME I11 - JULY 1995
INTERNATIONAL CIVIL AVIATION ORGANIZATION
Checklist of Amendments to Annex 10, Volume I11
EIfective date Date of applicability
Amendment 71
(adopted by the Council on 12 March 1996)
Amendment 72
(adopted by the Council on 12 March 1997)
15 July 1996 7 November 1996
21 July 1997 6 November 1997
Amendment 73
(adopted by the Council on 19 March 1998)
(New and replacement pages (iii) to (v), (ix), 4, 4A to
4K. 223-250,255, 261, 264, 265, 268-270, 276,
330 and 332-336) 20 July 1998 5 November 1998
Transmittal Note
Amendment 73
to the
International Standards and
Recommended Practices
AERONAUTICAL TELECOMMUNICATIONS
(Annex 10, Volume 111, to the Convention
on International Civil Aviation)
To incorporate Amendment 73, which becomes applicable on 5 November 1998:
1. Insert the following new and replacement pages dated 511 1/98:
a) Pages (iii) to (v) - Table of Contents
b) Page (ix) - Foreword
c) Pages 4 and 4A to 4K - Chapter 3
d) Pages 223 to 250, 255, 261, 264, 265,
268-270 and 276 - Chapter 5
e) Pages 330 and 332 to 336 - Appendix to Chapter 9
2. Record the entry of this amendment on page (ii).

Annex 10 .Aer onautical Telecommunications Volume I21
8.2 Technical provisions relating to teletypewriter
apparatus and circuits used in the AFTN . . . . . . . 283
8.3 Terminal equipment associated with aeronautical
radioteletypewritcr channels operating in the band
2.5 - 30 MHz . . . . . . . . . . . . . . . . . . . . . . . . . 285
8.4 Characteristics of interregional AFS circuits . . . . 285
8.5 Technical provisions relating to ATS
message transmission . . . . . . . . . . . . . . . . . . . . 286
8.6 Technical provisions relating to international
ground-ground data interchange at medium and
higher signalling rates . . . . . . . . . . . . . . . . . . . . 286
Chapter 9 . Aircraft Addressing System ........... 329
Appendix to Chapter 9 . A World-wide Scheme
for the Allocation. Assignment and Application
of Aircraft Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . 330
1 . General . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
2 . Description of the scheme . . . . . . . . . . . . . . . . . 330
3 . Management of the scheme . . . . . . . . . . . . . . . . 330
4 . Allocation of aircraft addresses . . . . . . . . . . . . . 330
5 . Assignment of aircraft addresses . . . . . . . . . . . . 330
6 . Application of aircraft addresses . . . . . . . . . . . . 33 1
Table 9-1 . Allocation of aircraft addresses to States 332
Chapter 10. Point-to-Multipoint Communications .... 337
10.1 Service via satellite for the dissemination
of aeronautical information . . . . . . . . . . . . . . . . 337
10.2 Service via satellite for the dissemination of
WAFS products . . . . . . . . . . . . . . . . . . . . . . . . 337
PART XI .VO ICE COMMUNICATION
SYSTEMS
Chapter 1 . Definitions ........................ 339
Chapter 2 . Aeronautical Mobile Service ........... 340
2.1 Air-ground VHF communication system
characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 340
2.2 System characteristics of the ground installation . . 340
2.3 System charactefistics of the airborne installation . 342
2.4 Single sideband (SSB) HF communication system
characteristics for use in the aeronautical mobile
service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
Chapter 3 . SELCAL System ................... 348
Chapter 4 . Aeronautical Speech Circuits ........... 349
4.1 Technical provisions relating to international
aeronautical speech circuit switching
and signalling . . . . . . . . . . . . . . . . . . . . . . . . . 349
Chapter 5 . Emergency Locator 'fiansmitter (ELT)
for Search and Rescue ........................
5.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Specification for emergency locator transmjners
(ELT) for search and rescue operating on
121.5 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Specification for UHF emergency locator
transmitter (ELT) operating on 406 MHz . . . . . . .
Appendix 1 to Chapter 5 . Emergency Locator
Transmitter Coding . . . . . . . . . . . . . . . . . . . . . . . . . . .
I . General . . . . . . . . . . . . . . . . . . . . . . . . . . . .
　
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