lnkcnrtfonrtStaWdr and Recommended Practices and supemecW, on t H aOD3, all prwious edltlom d Annex 3. Fat informa- vrdlng the applleablltly d Stanbards and Rmmmendsd Praetkss, 88eFoRword. Fcrurtssnth Edltlon July 20a3 International Civil Aviation Organization
ICAO TECHNICAL PUBLICATIONS The following summary gives the status, and also describes in general terms the contents of the various series of technical publications issued by the International Civil Aviation Organization. It does not include specialized publications that do not fall specifically within one of the series, such as the Aeronautical Chart Catalogue or the Meteorological Tables for International Air Navigation. International Standards and Recommended Practices are adopted by the Council in accordance with Articles 54, 37 and 90 of the Convention on International Civil Aviation and are designated, for convenience, as Annexes to the Convention. The uniform application by Contracting States of the specifications contained in the International Standards is recognized as necessary for the safety or regularity of international air navigation while the uniform application of the specifications in the Recommended Practices is regarded as desirable in the interest of safety, regularity or efficiency of international air navigation. Knowledge of any differences between the national regulations or practices of a State and those established by an International Standard is essential to the safety or regularity of international air navigation. In the event of non-compliance with an International Standard, a State has, in fact, an obligation, under Article 38 of the Convention, to notify the Council of any differences. Knowledge of differences from Recommended Practices may also be important for the safety of air navigation and, although the Convention does not impose any obligation with regard thereto, the Council has invited Contracting States to notify such differences in addition to those relating to International Standards. Procedures for Air Navigation Services PANS are approved by the Council for worldwide application. They contain, for the most part, operating procedures regarded as not yet having attained a sufficient degree of maturity for adoption as International Standards and Recommended Practices, as well as material of a more permanent character which is considered too detailed for incorporation in an Annex, or is susceptible to frequent amendment, for which the processes of the Convention would be too cumbersome. Regional Supplementary Procedures SUPPS have a status similar to that of PANS in that they are approved by the Council, but only for application in the respective regions. They are prepared in consolidated form, since certain of the procedures apply to overlapping regions or are common to two or more regions. The following publications are prepared by authorip of the Secretary General in accordance with the principles and policies approved by the Council. Technical Manuals provide guidance and information in amplification of the International Standards, Recommended Practices and PANS, the implementation of which they are designed to facilitate. Air Navigation Plans detail requirements for facilities and services for international air navigation in the respective ICAO Air Navigation Regions. They are prepared on the authority of the Secretary General on the basis of recommendations of regional air navigation meetings and of the Council action thereon. The plans are amended periodically to reflect changes in requirements and in the status of implementation of the recommended facilities and services. ICAO Circulars make available specialized information of interest to Contracting States. This includes studies on technical subjects.
lnternational Standards and Recommended Practices Annex 3 to the Convention on lnternational Civil Aviation Meteorological Service for International Air Navigation This edition incorporates all amendments adopted by the Council prior to 8 March 2001 and supersedes, on 1 November 2001, all previous editions of Annex 3. For information regarding the applicability of the Standards and Recommended Practices, see Foreword. Fourteenth Edition July 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
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