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clearance.
11.6.5 When the instrument approach procedure is
designed for RNP, the abbreviation "RNP shall be applied,
and the RNP value shall be published in subscript and
parenthesis, e.g. "RNP (0,3).'.
11.6.6 When operationally required, separate charts shall
be published for each sensor or for a combination of
navigation sensors. Separate charts shall only be published if
the routes differ laterally or vertically.
11.7 Culture and topography
11.7.1 Culture and topographic information pertinent to
the safe execution of the instrument approach procedure,
including the missed approach procedure, associated holding
procedures and visual manoeuvring (circling) procedure when
established, shall be shown. Topographic information shall be
named, only when necessary, to facilitate the understanding of
such information, and the minimum shall be a delineation of
land masses and significant lakes and rivers.
11.7.2 Relief shall be shown in a manner best suited to
the particular elevation characteristics of the area. In areas
where relief exceeds 1 200 m (4 000 ft) above the aerodrome
elevation within the coverage of the chart or 600 m (2 000 ft)
within 11 km (6 NM) of the aerodrome reference point or
when final approach or missed approach procedure gradient is
steeper than optimal due to terrain, all relief exceeding 150 m
(500 ft) above the aerodrome elevation shall be shown by
smoothed contour lines, contour values and layer tints printed
in brown. Appropriate spot elevations, including the highest
elevation within each top contour line, shall also be shown
printed in black.
Note I.- The next higher suitable contour line appearing
on base topographic maps exceeding 150 m (5008) above the
aerodrome elevation may be selected to start layer tinting.
Note 2.- An appropriate brown colour; on which half-tone
layer tinting is to be based, is specijied in Appendix 3 -
Colour Guide for contours and topographic features.
Note 3.- Appropriate spot elevations are those provided by
the procedures specialists.
11.7.3 Recommendation.- In areas where relief is
lower than specified in 11.7.2. all relief exceeding I50 m
(500fr) above the aerodrome elevation should be shown by
smoothed contour lines, contour values and layer tints printed
in brown. Appropriate spot elevations, including the highest
elevation within each top contour line, should also be shown
printed in black.
Note 1.- The next higher suitable contour line appearing
on base topographic maps exceeding I50 m (500 ft) above the
aerodrome elevation may be selected to start laver tinting.
Note 2.- An appropriate brown colour; on which half-tone
layer tinting is to be based, is spec~jied in Appendix 3 -
Colour Guide for contours and topographic features.
Note 3.- Appropriate spot elevations are those provided by
the procedures specialists.
11.8 Magnetic variation
11.8.1 Recommendation.- The magnetic variation
should be shown.
11.8.2 When shown, the value of the variation, indicated
to the nearest degree, shall agree with that used in determining
magnetic bearings, tracks and radials.
11.9 Bearings, tracks and radials
11.9.1 Bearings, tracks and radials shall be magnetic
except as provided for in 11.9.2.
Note.- A note to this effect may be included on the chart.
11.9.2 Recommendation.- In areas of high latitude
where it is determined by the appropriate authority that
reference to Magnetic North is impractical, another suitable
reference, i.e. True North or Grid North, should be used.
11.9.3 Where bearings, tracks and radials are given with
reference to True North or Grid North, this shall be clearly
indicated. When Grid North is used its reference grid meridian
shall be identified.
Chapter I1 Annex 4 - Aeronairtical Charts
11.10 Aeronautical data 11.10.3 Prohibited, restricted and danger areas
1 1.10.1 Aerodromes
11.10.1.1 All aerodromes which show a distinctive
pattern from the air shall be shown by the appropriate symbol.
Abandoned aerodromes shall be identified as abandoned.
11.10.1.2 The runway pattern, at a scale sufficiently large
to show it clearly, shall be shown for:
1) the aerodrome on which the procedure is based;
2) aerodromes affecting the traffic pattern or so situated as
to be likely, under adverse weather conditions, to bc
mistaken for the aerodrome of intended landing.
1 1.10.1.3 The aerodrome elevation shall be shown to the
nearest metre or foot in a prominent position on the chart.
1 1.10.1.4 The threshold elevation or, where applicable,
the highest elevation of the touchdown zone shall be shown to
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ICAO 附件4 Aeronautical Charts an04_10ed(30)
