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National Advisory Committee for Aeronautics, Technical Notes - Manual of the ICAO Standard Atmosphere Calculation by the NACA International Civil Aviation Organization and Langley Aeronautical Laboratory

As the result of recommendations made by the Airworthiness, the
Operations, and the MBteorological Divisions, the ICAO Council at a meeting
on 25 June 1950 agreed that a joint subcommission of the Commission for
Aeronautical Meteorology and the Aerological Commission of the International
Meteorological Organization be established to discuss with representatives
of ICAO the problem of establishing a detailed specification and data of
the ICAO standard atmosphere defined in general terms in Part I of Annex 8
(Standards and Recommended Practices for the Airworthiness of Aircraft).

A working group consisting of the above mentioned.representatives
met in July/August 1950 in Montreal and established a proposal for a
detailed specification of the ICAO standard atmosphere. This proposal
was included in Doc 70h1 (ref. 1) and at the beginning of 1951 was cir—
culated to all contracting states for comments.

On 7 Nevemher 1952 the ICAO Council approved the detailed specifica—
tion of the ICAO standard atmoSphere in accordance with Doc 7041 and
directed the Secretary General to publish the detailed specification and
its associated tables and diagrams in the form of this technical manual.

This manual is intended to facilitate the uniform application of the
ICAO standard atmosphere defined in Annex 8 (ref. 2) and to provide the
users of the standard'atmosphere with convenient sets of data that are
accurate enough for all practical uses and are based on internationally
agreed physical constants and conversion factors. For practical engi-
neering purposes, the data contained herein may be considered equivalent
to those of previously adopted standard atmospheres.