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The following practice has been adhered to in order to indicate
at a glance the status of each statement: Standards have been
printed in light face roman; Recommended Practices have
been printed in light face italics, the status being indicated by
the prefix Recommendation; Notes have been printed in light
face italics, the status being indicated by the prefix Note.
The following editorial practice has been followed in the
writing of specifications: for Standards the operative verb
“shall” is used, and for Recommended Practices the operative
verb “should’’ is used.
The units of measurement used in this document are in
accordance with the International System of Units (SI) as
specified in Annex 5 to the Convention on International Civil
Aviation. Where Annex 5 permits the use of non-SI alternative
units these are shown in parentheses following the basic units.
Where two sets of units are quoted it must not be assumed that
the pairs of values are equal and interchangeable. It may,
however, be inferred that an equivalent level of safety is
achieved when either set of units is used exclusively.
Any reference to a portion of this document, which is
identified by a number and/or title, includes all subdivisions of
that portion.
Foreword Annex 14 — Aerodromes
(ix) 9/11/95
Table A. Amendments to Annex 14, Volume II
Amendment Source(s) Subject(s)
Adopted
Effective
Applicable
1st Edition Fourth Meeting of
the ANC Helicopter
Operations Panel;
Eleventh meeting of
the ANC Visual
Aids Panel and
Secretariat
Physical characteristics; obstacle limitation surfaces; visual aids for visual
meteorological conditions; rescue and fire fighting services.
9 March 1990
30 July 1900
15 November 1990
1
(2nd Edition)
Twelfth Meeting of
the ANC Visual
Aids Panel and
Secretariat
Standard geodetic reference system (WGS-84); frangibility; visual aids for
helicopter non-precision approaches; and visual alignment guidance system.
13 March 1995
24 July 1995
9 November 1995
2 Air Navigation
Commission
Aeronautical data bases and vertical component of the World Geodetic
System — 1984 (WGS-84).
21 March 1997
21 July 1997
6 November 1997
6/11/97
No. 2
ANNEX 14 — VOLUME II 1 96/1/111//9957
No. 2
INTERNATIONAL STANDARDS
AND RECOMMENDED PRACTICES
CHAPTER 1. GENERAL
Introductory Note.— Volume II of this Annex contains
Standards and Recommended Practices (specifications) that
prescribe the physical characteristics and obstacle limitation
surfaces to be provided for at heliports, and certain facilities
and technical services normally provided at a heliport. It is
not intended that these specifications limit or regulate the
operation of an aircraft.
The specifications in this volume modify or complement
those in Volume I which, where appropriate, are also
applicable to heliports. In other words, where a particular
issue is a subject of a specification in this volume that
specification will supersede any other specification on that
particular issue in Volume I. Throughout this volume the term
“heliport” is used; however, it is intended that these
specifications also apply to areas for the exclusive use of
helicopters at an aerodrome primarily meant for the use of
aeroplanes.
It is to be noted that provisions for helicopter flight
operations are contained in Annex 6, Part III.
1.1 Definitions
When the following terms are used in this volume they have
the meanings given below. Annex 14, Volume I contains
definitions for those terms which are used in both volumes.
Accuracy. A degree of conformance between the estimated or
measured value and the true value.
Note.— For measured positional data the accuracy is
normally expressed in terms of a distance from a stated
position within which there is a defined confidence of the true
position falling.
Air taxiway. A defined path on the surface established for the
air taxiing of helicopters.
Air transit route. A defined path on the surface established for
the air transitting of helicopters.
Cyclic redundancy check (CRC). A mathematical algorithm
applied to the digital expression of data that provides a
level of assurance against loss or alteration of data.
Data quality. A degree or level of confidence that the data
provided meets the requirements of the data user in terms
of accuracy, resolution and integrity.
Declared distances — heliports.
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