lnternational Standards and Recommended Practices and Procedures for Air Navigation Sewices Annex 10 to the Convention on lnternational Civil Aviation nautica communications Volume 11 Communication Procedures including those with PANS status This edition incorporates ail amendments adopted by the Council prior to 13 March 2001 and supersedes, on 1 November 2001, all previous editions of Annex 10, Volume ll. For information regarding the applicability of the Standards and Recommended Practices and the Procedures for Air Navigation Services, see Foreword. Sixth Edition October 2001 lnternational Civil Aviation Organization
AMENDMENTS The issue of amendments is announced regularly in the ICAO Journal and in the monthly Supplement to the Catalogue of ICAO Publications and Audio-visual Training Aids, which holders of this publication should consult. The space below is provided to keep a record of such amendments. RECORD OF AMENDMENTS AND CORRIGENDA ii AMENDMENTS No. 44-76 77 78 79 Date applicable Date entered Entered by Incorporated in this edition Did not affect this volume 2711 1/03 Did not affect this volume - ICAO
TABLE OF CONTENTS Foreword ..................................... vii Chapter 1 . Definitions .......................... 1- 1 1.1 Services ................................ 1-1 1.2 Stations ................................ 1-2 1.3 Communication methods .................. 1-3 1.4 Direction finding ......................... 1-3 1.5 Teletypewriter systems .................... 1-3 1.6 Agencies ............................... 1-4 1.7 Frequencies ............................. 1-4 1.8 Data link communications ................. 1-4 1.9 Miscellaneous ........................... 1-4 Chapter 2 . Administrative Provisions Relating to the International Aeronautical Telecommunication Service ....................................... 2-1 2.1 Division of service ....................... 2- 1 2.2 Telecommunication - Access .............. 2- 1 2.3 Hours of service ......................... 2- 1 . . 2.4 Supervision ............................. 2-1 2.5 Superfluous transmissions .................. 2- 1 2.6 Interference ............................. 2-1 Chapter 3 . General Procedures for the International Aeronautical Telecommunication Service ............ 3 . 1 3.1 General ................................ 3-1 3.2 Extensions of service and closing down of stations ......................... 3 . 1 3.3 Acceptance, transmission and delivery of messages ............................. 3-1 3.4 Time system ............................ 3 -2 3.5 Record of communications ................. 3-2 3.6 Establishment of radiocommunication ........ 3-3 3.7 Use of abbreviations and codes ............. 3-3 3.8 Cancellation of messages .................. 3-3 Chapter 4 . Aeronautical Fixed Service AFS ....... 4-1 4.1 General ................................ 4-1 4.2 ATS direct speech circuits ................. 4-2 4.3 Meteorological operational channels and meteorological operational telecommunication networks ............................... 4-2 4.4 Aeronautical fixed telecommunication network AFTN ......................... 4-3 ........................... 4.4.1 General 4-3 4.4.2 Message format - ITA-2 ............ 4-7 4.4.3 Address .......................... 4-9 4.4.4 Origin ............................ 4-10 4.4.5 Text ............................. 4-11 4.4.6 Ending ........................... 4-12 4.4.7 Tape feed ......................... 4-12 4.4.8 Stripped address ................... 4-13 4.4.9 Teletypewriter operating procedure - general ........................... 4-13 - End-of-line functions ............ 4-13 - Duration of transmissions ........ 4-13 - Channel-check transmissions ...... 4-13 4.4.10 Normal teletypewriter transmission procedures ........................ 4-14 - Form of transmission . teletypewriter operation .......... 4-14 - Message format ................ 4-14 - Reprocessing procedures ......... 4-15 - Aclcnowledgement of receipt of messages ..................... 4-15 4.4.11 Action on mutilated or improperly formatted messages detected in teletypewriter relay stations .......... 4-16 4.4.12 Correction of errors during tape preparation ........................ 4-19 4.4.13 Correction of errors during message origination in cases where the message is flowing into the AFTN during preparation .................. 4-20 4.4.14 Predetermined distribution system for AFTN messages ................ 4-20 4.4.15 Message format - IA-5 ............. 4-21 - Heading ...................... 4-21 - Address ...................... 4-21 - Text .......................... 4-24 4.4.16 Action taken on mutilated messages in IA-5 detected in computerized AFTN relay stations ................ 4-26 4.4.17 Transfer of AFTN messages over code and byte independent circuits and networlts ...................... 4-26 4.5 Common ICAO Data Interchange Network CIDIN ................................ 4-26 4.6 ATS message handling services ATSMHS .............................. 4-27 4.7 Inter-centre communications ICC ................................... 4-28 ANNEX 10 - VOLUME I1 iii
Annex 10 . Aeronautical Telecommunications Volume 11 Chapter 5 . Aeronautical Mobile Service - Voice . . Communications ............................... 5- 1 5.1 General ................................ 5-1 - Categories of messages ................. 5-1 - Cancellation of messages ................ 5-2 5.2 Radiotelephony procedures ................. 5-2 .......................... 5.2.1 General 5-3 - Language to be used ............ 5-3 - Word spelling in radiotelephony ... 5-3 - Transmission of numbers in radiotelephony ................. 5-3 - Transmitting technique .......... 5-5 - Composition of messages ........ 5-7 - Calling ....................... 5-8 - Test procedures ................ 5-1 1 - Exchange of communications ..... 5-1 1 5.2.2 Establishment and assurance of communications ................... 5-1 2 Communications watch/ Hours of service ............... 5-12 Principles of network operation HF communications ........... 5- 1 3 - Frequencies to be used .......... 5-1 3 - Establishment of communications . 5-14 - Transfer of HF communications ... 5-1 4 - Transfer of VHF communications . 5-1 4 - Communications failure ......... 5- 14 5.2.3 HF message handling ............... 5-1 5 - General ...................... 5-15 - Transmission of ATS messages to aircraft ..................... 5- 1 6 - Recording of air-ground communications on teletypewriter . 5-16 5.2.4 SELCAL procedures ............... 5- 17 - General ...................... 5-17 - Notification to aeronautical stations of aircraft SELCAL codes ........................ 5-17 - Pre-flight check ................ 5-17 - Establishment of communications . 5-17 - En-route procedures ............ 5-1 7 - SELCAL code assignment to aircraft ..................... 5- 1 8 5.3 Distress and urgency radiotelephony communication procedures ................. 5- 18 5.3.1 General .......................... 5-18 5.3.2 Radiotelephony distress communications ................... 5-1 9 - Action by the aircraft in distress . . 5-19 - Action by the station addressed or first station aclcnowledging the distress message ............ 5-1 9 - Imposition of silence ............ - Action by all other stations ....... - Termination of distress communications and of silence .... 5.3.3 Radiotelephony urgency . . communications .................... - Action by the aircraft reporting an urgency condition except as indicated in 5.3.3.4 ............. - Action by the station addressed or first station aclcnowledging the urgency message ............... - Action by all other stations ....... - Action by an aircraft used for medical transports .............. - Action by the station addressed or by other stations receiving a medical transports message ....... 5.4 Communications related to acts of unlawful interference ...................... Chapter 6 . Aeronautical Radio Navigation Service ................................. 6.1 General 6.2 Direction finding ......................... Chapter 7 . Aeronautical Broadcasting Service ....... ................................. 7.1 General .................. 7.1.1 Broadcast material 7.1.2 Frequencies and schedules ........... 7.1.3 Interruption of service ............... 7.2 Radiotelephone broadcast procedures ......... 7.2.1 Broadcast technique ................ 7.2.2 Preamble of the general call .......... Chapter 8 . Aeronautical Mobile Service - Data Link . . Communications ................................ ................................. 8.1 General 8.1.1 Composition of data link messages .... 8.1.2 Display of data link messages ........ 8.2 CPDLC procedures ....................... - Establishment of CPDLC ............... - Exchange of operational CPDLC messages . - Display of CPDLC messages ............ - Free text messages ..................... - Emergencies, hazards and equipment failure procedures ..................... - Downstream clearance delivery service ....
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