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the clearing and marking surfaces specified in Annex 14,
Volume I, Chapter 4, shall be shown.
4.7.4 Roads and railroads within the take-off and
approach area, and less than 600 m (2 000 ft) from the end of
the runway or runway extensions, shall be shown.
Note.- Geographical names offeatures may be shown ifof
sign$cance.
4.8 Magnetic variation
k) take-off and approach surfaces identified as such and
depicted by a broken line;
1) take-off and approach areas;
Note.- The take-off area is described in 3.8.2.1.
The approach area consists of an area on the surface
of the earth lying directly below the approach surface
as spec#ed in Annex 14, Volume I, Chapter 4.
m) obstacles at their exact location, including:
1) a symbol indicative of their type;
2) elevation;
The chart shall show a compass rose orientated to the True 3) identification;
North, or a North point, showing the magnetic variation to the
nearest degree with the date of magnetic information and 4) limits of penetration of large extent in a distinctive
annual change. manner identified in the legend;
4.9 Aeronautical data
4.9.1 The charts shall show:
a) the aerodrome reference point and its geographical
. . coordinates in degrees, minutes and seconds;
b)' the outline of the runways by a solid line;
c) the length and width of the runway;
d) the magnetic bearing to the nearest degree of the
runway and the runway number;
e) the elevation of the runway centre line at each end of
the runway, at the stopway, at the origin of each takeoff
and approach area, and at each significant change
of slope of runway and stopway;
taxiways, aprons and parking areas identified as such,
and the outlines by a solid line;
g) stopways identified as such and depicted by a broken
line;
h)" the length of each stopway;
Note.- This does not exclude the necessity for
indicating critical spot elevations within the take-off
and approach areas.
n) any additional obstacles, as determined by 3.8.1.1
including the obstacles in the shadow of an obstacle,
which would otherwise be exempted.
Note.- The specij?cations in Annex 14, Volume I,
Chapter 4, are minimum requirements. Where the competent
authority has established lower surfaces, they may be used in
the determination of obstacles.
4.9.1.1 Recommendation.- The nature of the runway
and stopway surfaces should be given.
4.9.1.2 Recommendation.- Wherever practicable, the
highest object or obstacle between adjacent approach areas
within a radius of 5 000 m (15 0003) from the aerodrome
reference point should be indicated in a prominent manner.
4.9.1.3 Recommendation.- The extent of tree areas and
relief features, part of which constitute obstacles, should be
shown.
4.10 Accuracy
4.10.1 The order of accuracy attained shall be shown on
the chart.
i) clearways identified as such and depicted by a broken 4.10.2 Recommendation.- The horizontal dimensions
line; and the elevations of the movement area, stopways and
clearways to be printed on the chart should be determined to
j) the length of each clearway; the nearest 0.5 m (I 3).
25/11/04
No. 53
CHAPTER 5. AERODROME OBSTACLE CHART -
ICAO TYPE C
5.1 Function
When produced, this chart shall provide the obstacle data
necessary to enable an operator to develop procedures to
comply with the operating limitations of Annex 6, Parts I and
11, Chapter 5, and Part 111, Chapter 3, with particular reference
to information cln obstacles that limit the maximum
permissible take-of'f mass, and also to:
a) determine minimum safe heights including those for
circling procedures;
b) determine procedures for use in the event of an
emergency during take-off or landing;
c) provide source material for aeronautical charts and
aeronautical data bases.
Note.- An explanation of the intended purpose and use of
this chart is given in the Aeronautical Chart Manual
(Doc 8697).
5.2 Availability
This chart is not required where:
a) the obstacle data specified in 5.1 are published in the
AIP; or
b) no obstacles exist and notification of this is published in
the AIP.
5.3 Coverage and scale
5.3.1 The extent of each chart shall be sufficient:
a) to cover all obstacles, including obstacles in the shadow
of an obstacle, in the take-off flight path area which
project above a plane surface having a 1.2 per cent slope
and having a common origin with the take-off flight
path area. A,ccount shall be taken of mobile obstacles
such as boa.ts, trains, trucks, etc., which may project
　
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