Annex 3 to the Convention on International Civil Aviation ...

1 Meteorological Servicefor InternationalAir NavigationMeteorological Servicefor InternationalAir NavigationAnnex 3to the Convention onInternational Civil AviationAnnex 3to the Convention onInternational Civil AviationThis edition incorporates all amendmentsadopted by the Council prior to 2 February 20 0and supersedes, onNovember 20 0, all previouseditions of Annex information regarding the applicabilityof Standards and Recommended Practices, Civil Aviation OrganizationInternational Civil Aviation OrganizationInternational Standardsand Recommended PracticesInternational Standardsand Recommended PracticesSeventeenth EditionJuly 2010 Part ICore SARPsPart IIAppendices and AttachmentsPart ICore SARPsPart IIAppendices and Attachments International Standards and Recommended Practices This edition incorporates all amendments adopted by the Council prior to 23 February 2010 and supersedes, on 18 November 2010, all previous editions of Annex 3.

2 For information regarding the applicability of the Standards and Recommended Practices, see Foreword. Seventeenth Edition July 2010 International Civil Aviation Organization Meteorological Service for International Air Navigation _____ Annex 3 to the Convention on International Civil Aviation Part I Core SARPs Part II Appendices and Attachments Published in separate English, Arabic, Chinese, French, Russian and Spanish editions by the International Civil Aviation ORGANIZATION 999 University Street, Montr al, Quebec, Canada H3C 5H7 For ordering information and for a complete listing of sales agents and booksellers.

3 Please go to the ICAO website at First edition 1948 Sixteenth edition 2007 Seventeenth edition 2010 Annex 3, Meteorological Service for International Air Navigation Order Number: AN 3 ISBN 978-92-9231-507-8 ICAO 2010 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 Catalogue of ICAO Publications; the Catalogue and its supplements are available on the ICAO website at The space below is provided to keep a record of such amendments.

4 RECORD OF AMENDMENTS AND CORRIGENDA AMENDMENTS CORRIGENDA No. Date applicable Date entered Entered by No. Date of issue Date entered Entered by 1-75 Incorporated in this Edition 1 31/1/11 ICAO Annex 3 (v)

5 18/11/10 TABLE OF CONTENTS Page FOREWORD .. (ix) PART I. CORE SARPs CHAPTER 1. Definitions .. 1-1 Definitions .. 1-1 Terms used with a limited meaning .. 1-7 CHAPTER 2. General provisions .. 2-1 Objective, determination and provision of meteorological service .. 2-1 Supply, use and quality management of meteorological information.

6 2-2 Notifications required from operators .. 2-3 CHAPTER 3. World area forecast system and meteorological offices .. 3-1 Objective of the world area forecast system .. 3-1 World area forecast 3-1 Meteorological offices .. 3-2 Meteorological watch offices .. 3-3 Volcanic ash advisory centres .. 3-4 State volcano observatories .. 3-4 Tropical cyclone advisory centres.

7 3-5 CHAPTER 4. Meteorological observations and reports .. 4-1 Aeronautical meteorological stations and observations .. 4-1 Agreement between air traffic services authorities and meteorological authorities .. 4-2 Routine observations and reports .. 4-2 Special observations and reports .. 4-3 Contents of reports .. 4-3 Observing and reporting meteorological elements .. 4-4 Reporting meteorological information from automatic observing systems.

8 4-6 Observations and reports of volcanic activity .. 4-6 CHAPTER 5. Aircraft observations and reports .. 5-1 Obligations of States .. 5-1 Types of aircraft observations .. 5-1 Routine aircraft observations designation .. 5-1 Annex 3 Meteorological Service for International Air Navigation Table of Contents Page 18/11/10 (vi) Routine aircraft observations exemptions .. 5-1 Special aircraft observations .. 5-2 Other non-routine aircraft observations.

9 5-2 Reporting of aircraft observations during flight .. 5-2 Relay of air-reports by ATS units .. 5-2 Recording and post-flight reporting of aircraft observations of volcanic activity .. 5-3 CHAPTER 6. Forecasts .. 6-1 Interpretation and use of forecasts .. 6-1 Aerodrome forecasts .. 6-1 Landing forecasts .. 6-2 Forecasts for take-off .. 6-2 Area forecasts for low-level 6-3 CHAPTER 7. SIGMET and AIRMET information, aerodrome warnings and wind shear warnings and alerts.

10 7-1 SIGMET information .. 7-1 AIRMET information .. 7-1 Aerodrome warnings .. 7-2 Wind shear warnings and alerts .. 7-2 CHAPTER 8. Aeronautical climatological information .. 8-1 General provisions .. 8-1 Aerodrome climatological tables .. 8-1 Aerodrome climatological summaries .. 8-1 Copies of meteorological observational data .. 8-2 CHAPTER 9. Service for operators and flight crew members.