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Annex 3. Edition 20
Last modified:11/4/2021
Meteorological Service for International Air Navigation. Part I — Core SARPs. Part II — Appendices and Attachments
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INTERNATIONAL CIVIL AVIATION ORGANIZATIONAnnex 3Practices, see Foreword.For information regarding the applicability of the Standards and Recommended This edition supersedes, on 8 November 2018, all previous editions of Annex 3.Part I Core SARPsPart II Appendices and AttachmentsTwentieth Edition, July 2018to the Convention on International Civil AviationMeteorological Service for International Air NavigationInternational Standardsand Recommended Practices
INTERNATIONAL CIVIL AVIATION ORGANIZATIONAnnex 3Practices, see Foreword.For information regarding the applicability of the Standards and Recommended This edition supersedes, on 8 November 2018, all previous editions of Annex 3.Part I Core SARPsPart II Appendices and AttachmentsTwentieth Edition, July 2018to the Convention on International Civil AviationMeteorological Service for International Air NavigationInternational Standardsand Recommended Practices
Published in separate English, Arabic, Chinese, French, Russian and Spanish editions by the INTERNATIONAL CIVIL AVIATION ORGANIZATION 999 Robert-Bourassa Boulevard, Montral, Quebec, Canada H3C 5H7 For ordering information and for a complete listing of sales agents and booksellers, please go to the ICAO website at www.icao.int First edition 1948 Nineteenth edition 2016 Twentieth edition 2018 Annex 3 Meteorological Service for International Air Navigation Order Number AN 3 ISBN 978-92-9258-482-5 ICAO 2018 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, without prior permission in writing from the International Civil Aviation Organization.
iii AMENDMENTS Amendments are announced in the supplements to the Products and Services Catalogue the Catalogue and its supplements are available on the ICAO website at www.icao.int. The space below is provided to keep a record of such amendments. RECORD OF AMENDMENTS AND CORRIGENDA AMENDMENTS CORRIGENDA No. Date applicable Date entered Entered by No. Date of issue Date entered Entered by 1-78 Incorporated in this Edition 1 30/11/18 ICAO 79 5/11/20 4/11/21 ICAO 80 4/11/21 ICAO
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Table Of Contents
COVER PAGE
AMENDMENTS
TABLE OF CONTENTS
FOREWORD
PART I. CORE SARPs
CHAPTER 1. DEFINITIONS
1.1 Definitions
1.2 Terms used with a limited meaning
CHAPTER 2. GENERAL PROVISIONS
2.1 Objective, determination and provision of meteorological service
2.2 Supply, use, quality management and interpretation of meteorological information
2.3 Notifications required from operators
CHAPTER 3. GLOBAL SYSTEMS, SUPPORTING CENTRES AND METEOROLOGICAL OFFICES
3.1 World area forecast system
3.2 World area forecast centres
3.3 Aerodrome meteorological offices
3.4 Meteorological watch offices
3.5 Volcanic ash advisory centres
3.6 State volcano observatories
3.7 Tropical cyclone advisory centres
3.8 Space weather centres
CHAPTER 4. METEOROLOGICAL OBSERVATIONS AND REPORTS
4.1 Aeronautical meteorological stations and observations
4.2 Agreement between meteorological authorities and air traffic services authorities
4.3 Routine observations and reports
4.4 Special observations and reports
4.5 Contents of reports
4.6 Observing and reporting meteorological elements
4.7 Reporting meteorological information from automatic observing systems
4.8 Observations and reports of volcanic activity
CHAPTER 5. AIRCRAFT OBSERVATIONS AND REPORTS
5.1 Obligations of States
5.2 Types of aircraft observations
5.3 Routine aircraft observations — designation
5.4 Routine aircraft observations — exemptions
5.5 Special aircraft observations
5.6 Other non-routine aircraft observations
5.7 Reporting of aircraft observations during flight
5.8 Relay of air-reports by air traffic services units
5.9 Recording and post-flight reporting of aircraft observations of volcanic activity
CHAPTER 6. FORECASTS
6.1 Use of forecasts
6.2 Aerodrome forecasts
6.3 Landing forecasts
6.4 Forecasts for take-off
6.5 Area forecasts for low-level flights
CHAPTER 7. SIGMET AND AIRMET INFORMATION, AERODROME WARNINGS AND WIND SHEAR WARNINGS AND ALERTS
7.1 SIGMET information
7.2 AIRMET information
7.3 Aerodrome warnings
7.4 Wind shear warnings and alerts
CHAPTER 8. AERONAUTICAL CLIMATOLOGICAL INFORMATION
8.1 General provisions
8.2 Aerodrome climatological tables
8.3 Aerodrome climatological summaries
8.4 Copies of meteorological observational data
CHAPTER 9. SERVICE FOR OPERATORS AND FLIGHT CREW MEMBERS
9.1 General provisions
9.2 Briefing, consultation and display
9.3 Flight documentation
9.4 Automated pre-flight information systems for briefing, consultation, flight planning and flight documentation
9.5 Information for aircraft in flight
CHAPTER 10. INFORMATION FOR AIR TRAFFIC SERVICES, SEARCH AND RESCUE SERVICES AND AERONAUTICAL INFORMATION SERVICES
10.1 Information for air traffic services units
10.2 Information for search and rescue services units
10.3 Information for aeronautical information services units
CHAPTER 11. REQUIREMENTS FOR AND USE OF COMMUNICATIONS
11.1 Requirements for communications
11.2 Use of aeronautical fixed service communications and the public Internet — meteorological bulletins
11.3 Use of aeronautical fixed service communications — world area forecast system products
11.4 Use of aeronautical mobile service communications
11.5 Use of aeronautical data link service — contents of D-VOLMET
11.6 Use of aeronautical broadcasting service — contents of VOLMET broadcasts
PART II. APPENDICES AND ATTACHMENTS
APPENDIX 1. FLIGHT DOCUMENTATION — MODEL CHARTS AND FORMS
APPENDIX 2. TECHNICAL SPECIFICATIONS RELATED TO GLOBAL SYSTEMS, SUPPORTING CENTRES AND METEOROLOGICAL OFFICES
1. WORLD AREA FORECAST SYSTEM
2. AERODROME METEOROLOGICAL OFFICES
3. VOLCANIC ASH ADVISORY CENTRES
4. STATE VOLCANO OBSERVATORIES
5. TROPICAL CYCLONE ADVISORY CENTRES
6. SPACE WEATHER CENTRES
APPENDIX 3. TECHNICAL SPECIFICATIONS RELATED TO METEOROLOGICAL OBSERVATIONS AND REPORTS
1. GENERAL PROVISIONS RELATED TO METEOROLOGICAL OBSERVATIONS
2. GENERAL CRITERIA RELATED TO METEOROLOGICAL REPORTS
3. DISSEMINATION OF METEOROLOGICAL REPORTS
4. OBSERVING AND REPORTING OF METEOROLOGICAL ELEMENTS
APPENDIX 4. TECHNICAL SPECIFICATIONS RELATED TO AIRCRAFT OBSERVATIONS AND REPORTS
1. CONTENTS OF AIR-REPORTS
2. CRITERIA FOR REPORTING
3. EXCHANGE OF AIR-REPORTS
4. SPECIFIC PROVISIONS RELATED TO REPORTING WIND SHEAR AND VOLCANIC ASH
APPENDIX 5. TECHNICAL SPECIFICATIONS RELATED TO FORECASTS
1. CRITERIA RELATED TO TAF
2. CRITERIA RELATED TO TREND FORECASTS
3. CRITERIA RELATED TO FORECASTS FOR TAKE-OFF
4. CRITERIA RELATED TO AREA FORECASTS FOR LOW-LEVEL FLIGHTS
APPENDIX 6. TECHNICAL SPECIFICATIONS RELATED TO SIGMET AND AIRMET INFORMATION, AERODROME WARNINGS AND WIND SHEAR WARNINGS AND ALERTS
1. SPECIFICATIONS RELATED TO SIGMET INFORMATION
2. SPECIFICATIONS RELATED TO AIRMET INFORMATION
3. SPECIFICATIONS RELATED TO SPECIAL AIR-REPORTS
4. DETAILED CRITERIA RELATED TO SIGMET AND AIRMET MESSAGES AND SPECIAL AIR-REPORTS (UPLINK)
5. SPECIFICATIONS RELATED TO AERODROME WARNINGS
6. SPECIFICATIONS RELATED TO WIND SHEAR WARNINGS
APPENDIX 7. TECHNICAL SPECIFICATIONS RELATED TO AERONAUTICAL CLIMATOLOGICAL INFORMATION
1. PROCESSING OF AERONAUTICAL CLIMATOLOGICAL INFORMATION
2. EXCHANGE OF AERONAUTICAL CLIMATOLOGICAL INFORMATION
3. CONTENT OF AERONAUTICAL CLIMATOLOGICAL INFORMATION
APPENDIX 8. TECHNICAL SPECIFICATIONS RELATED TO SERVICE FOR OPERATORS AND FLIGHT CREW MEMBERS
1. MEANS OF SUPPLY AND FORMAT OF METEOROLOGICAL INFORMATION
2. SPECIFICATIONS RELATED TO INFORMATION FOR PRE-FLIGHT PLANNING AND IN-FLIGHT REPLANNING
3. SPECIFICATIONS RELATED TO BRIEFING AND CONSULTATION
4. SPECIFICATIONS RELATED TO FLIGHT DOCUMENTATION
5. SPECIFICATIONS RELATED TO AUTOMATED PRE-FLIGHT INFORMATION SYSTEMS FOR BRIEFING, CONSULTATION, FLIGHT PLANNING AND FLIGHT DOCUMENTATION
6. SPECIFICATIONS RELATED TO INFORMATION FOR AIRCRAFT IN FLIGHT
APPENDIX 9. TECHNICAL SPECIFICATIONS RELATED TO INFORMATION FOR AIR TRAFFIC SERVICES, SEARCH AND RESCUE SERVICES AND AERONAUTICAL INFORMATION SERVICES
1. INFORMATION TO BE PROVIDED FOR AIR TRAFFIC SERVICES UNITS
2. INFORMATION TO BE PROVIDED FOR SEARCH AND RESCUE SERVICES UNITS
3. INFORMATION TO BE PROVIDED FOR AERONAUTICAL INFORMATION SERVICES UNITS
APPENDIX 10. TECHNICAL SPECIFICATIONS RELATED TO REQUIREMENTS FOR AND USE OF COMMUNICATIONS
1. SPECIFIC REQUIREMENTS FOR COMMUNICATIONS
2. USE OF AERONAUTICAL FIXED SERVICE COMMUNICATIONS AND THE PUBLIC INTERNET
3. USE OF AERONAUTICAL MOBILE SERVICE COMMUNICATIONS
4. USE OF AERONAUTICAL DATA LINK SERVICE — D-VOLMET
5. USE OF AERONAUTICAL BROADCASTING SERVICE — VOLMET BROADCASTS
ATTACHMENT A. OPERATIONALLY DESIRABLE ACCURACY OF MEASUREMENT OR OBSERVATION
ATTACHMENT B. OPERATIONALLY DESIRABLE ACCURACY OF FORECASTS
ATTACHMENT C. SELECTED CRITERIA APPLICABLE TO AERODROME REPORTS
ATTACHMENT D. CONVERSION OF INSTRUMENTED READINGS INTO RUNWAY VISUAL RANGE AND VISIBILITY
ATTACHMENT E. SPATIAL RANGES AND RESOLUTIONS FOR SPACE WEATHER ADVISORY INFORMATION