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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 Organizarion. 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 authoriv
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.
ICAO 2004
7104, EIPI 12500
Order No. AN 3
Printed in lCAO

　
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