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which are significant obstacles, shall be shown.
16.9.4 Prohibited, rcstrictcd and dangcr arcas
Prohibited, restricted and danger areas shall be shown.
16.9.5 Air traffic services system
16.8 Magnetic variation
16.8.1 Isogonic lines shall be shown.
16.8.2 The date of the isogonic information shall be
indicated in the margin.
16.9 Aeronautical data
16.9.1 Aeronautical data shown shall be kept to a
minimum consistent with the use of the chart for visual
navigation and the revision cycle (see 16.9.6).
16.9.5.1 Significant elements of the air traffic services
system including, where practicable, control zones, aerodrome
traffic zones, control areas, flight information regions and
other airspaces in which VFR flights operate shall be shown
together with the appropriate class of airspace.
16.9.5.2 Where appropriate, the air defence identification
zone (ADIZ) shall bc shown and propcrly idcntificd.
Note.- ADIZ procedures may be described in the chart
legend.
16.9.6 Radio navigation aids
16.9.2 Aerodromes
16.9.2.1 Land and water aerodromes and heliports shall
be shown with their names, to the extent that they do not
produce undesirable congestion on the chart, priority being
given to those of greatest aeronautical significance.
16.9.2.2 The aerodrome elevation, the lighting available,
the type of runway surface and the length of the longest
runway or channel, shown in abbreviated form for each
aerodrome in conformity with the example given in Appendix
2, provided they do not cause undesirable clutter on the
chart, shall be indicated.
16.9.2.3 Abandoned aerodromes which are still recognizable
as aerodromes from the air shall be shown and
identified as abandoned.
Radio navigation aids shall be shown by the appropriate
symbol and named, but excluding their frequencies, coded
designators, times of operation and other characteristics unless
any or all of this information which is shown is kept up to date
by means of new editions of the chart.
16.9.7 Supplementary information
16.9.7.1 Aeronautical ground lights together with their
characteristics or their identifications or both shall be shown.
16.9.7.2 Marine lights on outer prominent coastal or
isolated features of not less than 28 km (15 NM) visibility
range shall be shown:
1) where they are not less distinguishable than more
powerful marine lights in the vicinity;
16.9.3 Obstacles
16.9.3.1 Significant obstacles shall be shown.
Note.- Obstacles of a height of 100 m (300 fr) or more
above ground are normally regarded as signtjicant obstacles.
2) where they are readily distinguishable from other marine
or other types of lights in the vicinity of built-up coastal
areas;
3) where they are the only lights of significance available.
CHAPTER 17. AERONAUTICAL CHART - ICAO 1:500 000
17.1 Function
This chart shall provide information to satisfy the requirements
of visual air navigation for low speed, short- or medium-range
operations at low and intermediate altitudes.
Note 1.- This chart may be used:
a) to serve as a basic aeronautical chart;
b) to provide a suitable medium for basic pilot and
navigation training;
C) to supplement highly specialized charts which do not
provide essential visual information;
d) in pre-flight planning.
Note 2.- It is intended that these charts be provided for
land areas where charts of this scale are required for civil air
operations employing visual air navigation independently or
in support of other forms of air navigation.
Note 3.- Where States produce charts of this series
covering their national territories, the entire area being
portrayed is usually treated on a regional basis.
17.2 Availability
Recommendation.- The Aeronautical Chart - ICAO
1:500 000 should be made available in the manner prescribed
in 1.3.2 for all areas delineated in Appendix 5.
Note.- The selection of this scale as an alternative to the
World Aeronautical Chart - ICAO 1:l 000 000 is covered by
16.2.1 and 16.2.2.
17.3 Scales
17.3.1 Linear scales for kilometres and nautical miles
arranged in the following order:
- kilornetres,
- nautical miles,
with their zero points in the same vertical line shall be shown
in the margin.
17.3.1.1 Recommendation.- The length of the linear
scale should be not less than 200 mm (8 in).
17.3.2 A conversion scale (metreslfeet) shall be shown in
the margin.
17.4 Format
17.4.1 The title and marginal notes shall be in one of the
working languages of ICAO.
Note.- The language of the publishing country or any
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