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planned for introduction. Accordingly, any additional safeguards
that might be considered appropriate to provide for
more demanding aircraft are not taken into account. Such
matters are left to appropriate authorities to evaluate and take
into account as necessary for each particular aerodrome.
Guidance on some possible effects of future aircraft on these
specifications is given in the Aerodrome Design Manual,
Part 2.
security are given in Annex 17 and detailed guidance on the
subject is contained in the ICAO Security Manual.
1.1 Definitions
When the following terms are used in this Amex they have the
following meanings:
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.
Aerodrome. A defined area on land or water (including any
buildings, installations and equipment) intended to be used
either wholly or in part for the amval, departure and
surface movement of aircraft.
Aerodrome beacon. Aeronautical beacon used to indicate the
location of an aerodrome From the air.
Aerodrome certificate. A certificate issued by the appropriate
authority under applicable regulations for the operation of
an aerodrome.
Aerodrome elevation. The elevation of the highest point of the
It is to be noted that the specifications for precision approach landing area.
runways categories 11 and 111 are only applicable to runways
intended to be used by aeroplanes in code numbers 3 and 4. Aerodrome identification sign. A sign placed on an aerodrome
to aid in identifying the aerodrome from the air.
Annex 14, Volume I, does not include specifications
relating to the overall planning of aerodromes (such as
separation between adiacent aerodromes or capacity of
individual aerodromes) or to economic and other nontechnical
factors that need to be considered in the
development of an aerodrome. Information on these subjects is
included in the Airport Planning Manual, Part I.
Aviation security is an integral part of aerodrome planning
and operations. Annex 14, Volume I, contains several
specifications aimed at enhancing the level of security at
aerodromes. Specifications on other facilities related to
Aerodrome reference point. The designated geographical
location of an aerodrome.
Aerodrome traflc densiq.
a) Light. Where the number of movements in the mean
busy hour is not greater than 15 per runway or typically
less than 20 total aerodrome movements.
b) Medium. Where the number of movements in the mean
busy hour is of the order of 16 to 25 per runway or
typically between 20 to 35 total aerodrome movements.
ANNEX 14 - VOLUME I
Annex 14 - Aerodromes Volume I
c) Heavy. Where the number of movements in the mean
busy hour is of the order of 26 or more per runway or
typically more than 35 total aerodrome movements.
Note 1.- The number of movements in the mean busy hour
is the arithmetic mean over the year of the number of
movements in the daily busiest hour.
Note 2.- Either a take-off or a landing constitutes a
movement.
Aeronautical beacon An aeronautical ground light visible
at all azimuths, either continuously or intermittently, to
designate a particular point on the surface of the earth.
Aeronautical ground light. Any light specially provided as an
aid to air navigation, other than a light displayed on an
aircraft.
Aeroplane reference fwld length. The minimum field length
required for ' take-off at maximum certificated take-off
mass, sea level, standard atmospheric conditions, still air
and zero runway slope, as shown in the appropriate
aeroplane flight manual prescribed by the certificating
authority or equivalent data from the aeroplane manufacturer.
Field length means balanced field length for
aeroplanes, if applicable, or take-off distance in other cases.
Note.- Attachment A, Section 2 provides information on
the concept of balanced field length and the Airworthiness
Manual (Doc 9760) contains detailed guidance on matters
related to take-off distance.
Aircraft classifcation number (ACN). A number expressing
the relative effect of an aircraft on a pavement for a
specified standard subgrade category.
Note.- The aircrafi classification number is calculated
with respect to the center of gravity (CG) position which yields
the critical loading on the critical gear. Normally the afimost
CG position appropriate to the maximum gross apron (ramp)
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