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above the 1.2 per cent plane;
b) to cover all obstacles exceeding 120 m (400 ft) above
the lowest elevation on the runway(s) which may
influence the maximum permissible take-off mass or the
choice of the aircraft's flight profile both straight ahead
and in all areas where turning departures may occur;
c) to provide topographical information covering a
distance of approximately 45 krn (24 NM) from the
aerodrome reference point.
5.3.2 The horizontal scale shall be within the range of
1:20 000 to 1: 100 000.
Note.- A scale of 1:50 000 is preferred.
5.4 Format
The chart shall include:
a) any necessary explanation of the projection used;
b) any necessary identification of the grid used;
c) a box for recording amendments and dates thereof;
d) a box for recording the declared distances specified
in 5.8.2;
e) graduation marks at consistent intervals outside the neat
line, at least every 10 minutes of latitude and longitude
and marked in degrees and minutes.
Note I.- Lines of latitude and longitude may be shown
across the face of the chart.
Note 2.- Aerodrome Obstacle Chart - ICAO Type C may
consist of any suitable topographical chart or series of charts
available, overprinted with the necessary aeronautical data in
a distinctive colour.
5.5 Identification
The chart shall be identified by the name of the country in
which the aerodrome is located, the name of the city or town
which the aerodrome serves and the name of the aerodrome.
5.6 Magnetic variation
Recommendation.- The chart should show the magnetic
variation to the nearest degree with the date and annual
change.
ANNEX 4 5-1 25/11/04
No. 53
Annex 4 - Aeronautical Charts Chapter 5
5.7 Units of measurement
5.7.1 Elevations shall be shown to the nearest metre or
foot.
5.7.2 Linea~ dimensions shall be shown to the nearest
metre.
5.8 Aeronautical data
5.8.1 The chart shall show:
a) the aerod~ome reference point and its geographical
coordinates in degrees, minutes and seconds;
b) the runways and the extended runway centre lines;
c) obstacles as specified in 5.3.1 a) and b); the extent of
each plan shall be sufficient to cover all obstacles except
that isolated distant obstacles that would unnecessarily
increase the sheet size may be indicated by an arrow,
provided that the distance and bearing from a reference
point and their elevation and geographical coordinates
in degrees, minutes, seconds and tenths of seconds are
given;
d) the exact position of each obstacle by a symbol and its
geographical coordinates in degrees, minutes, seconds
and tenths of seconds;
e) the elevation of each obstacle;
f) an indication of the type of each obstacle;
Note.- The obstacle type may be given in textual
form or in areas where excessive clutter would ensue,
the obstacle may be identijied by a number on the chart
and the number and type tabulated in the margin or on
a separate sheet.
g) the limits of penetration of obstacles of large extent in a
distinctive manner identified in the legend;
Note.- This does not exclude the necessity for
indicating the positions of critical spot elevations and
their geographical coordinates in degrees, minutes,
seconds and tenths of seconds within such an area.
h) the positions of all radio navigation aids.
5.8.2 Declared distances
5.8.2.1 The following information for each direction of
each runway shall be entered in the space provided:
a) take-off run available;
b) accelerate-stop distancc available;
c) take-off distance available;
d) landing distance available.
Note.- In Annex 14, Volume I, Attachment A, guidance is
given on declared distances.
5.8.2.2 Recommendation.- Where a declared distance
is not provided becuuse a rurtway direction cannot be usedfor
take-off or landing or both, then this should be indicated and
the words "not usable" or the abbreviation "NU" entered.
5.9 Accuracy
The order of accuracy attained shall be shown on the chart.
25/11/04
No. 53
CHAPTER 8. AREA CHART - ICAO
8.1 Function
This chart shall provide the flight crew with information to
facilitate the following phases of instrument flight:
a) the transition between the en-route phase and approach
to an aerodrome;
8.4.3 Graduation marks shall be placed at consistent
intervals along the neat lines, as appropriate.
8.5 Identification
The chart shall be identified by a name associated with the
b) the transition between take-offlmissed approach and en- airspace
route phase of flight; and
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ICAO 附件4 Aeronautical Charts an04_10ed_amend_53(18)
