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-runway end lights; Application
- runway centre line lights;
- runway touchdown zone lights; and
5.3.3.1 Where operationally necessary an aerodrome
beacon or an identification beacon shall be provided at each
aerodrome intended for use at night.
- taxiway centre line lights. 5.3.3.2 The operational requirement shall be determined
having regard to the requirements of the air traffic using the
5.3.1.12 On the perimeter of and within the ellipse aerodrome, the conspicuity of the aerodrome features in
defining the main beam in Appendix 2, Figures A2-1 to relation to its surroundings and the installation of other visual
A2-10, the maximum light intensity value shall not be greater and non-visual aids usehl in locating the aerodrome.
than three times the minimum light intensity value measured
in accord-ance with Appendix 2, collective notes for Figures
A2-1 to A2-11, Note 2. Aerodrome beacon
5.3.1.13 On the perimeter of and within the rectangle 5.3.3.3 An aerodrome beacon shall be provided at an
defining the main beam in Appendix 2, Figures A2-12 to aerodrome intended for use at night if one or more of the
A2-20, the maximum light intensity value shall not be greater following conditions exist:
Anna 14 - Aerodromes Volume I
a) aircraft navigate predominantly by visual means;
b) reduced visibilities are frequen~o r
5.3.3.10 Recommendation.- The location of the beacon
should be such that the beacon is not shielded by objects in
significant directions and does not dazzle a pilot approaching
to land.
c) it is difficult to locate the aerodrome from the air due to
surrounding lights or terrain.
5.3.3.4 The aerodrome beacon shall be located on or
adjacent to the aerodrome in an area of low ambient background
lighting.
5.3.3.5 Recommendation.- The location of the beacon
should be such that the beacon is not shielded by objects in
significant directions and does not dazzle a pilot approaching
to land.
Characteristics
5.3.3.6 The aerodrome beacon shall show either coloured
flashes alternating with white flashes, or white flashes only.
The frequency of total flashes shall be from 20 to 30 per
minute. Where used, the coloured flashes emitted by beacons
at land aerodromes shall be green and coloured flashes emitted
by beacons at water aerodromes shall be yellow. In the case of
a combined water and land aerodrome, coloured flashes, if
used, shall have the colour characteristics of whichever section
of the aerodrome is designated as the principal facility.
5.3.3.7 The light fiom the beacon shall show at all angles
of azimuth. The vertical light distribution shall extend upwards
fiom an elevation of not more than lo to an elevation determined
by the appropriate authority to be sufficient to provide
guidance at the maximum elevation at which the beacon is
intended to be used and the effective intensity of the flash shall
be not less than 2 000 cd.
Note.- At locations where a high ambient background
lighting level cannot be avoided, the effective intensity of the
flosh may be required to be increased by a factor up to a value
of r o.
Identification beacon
Application
5.3.3.1 1 An identification beacon at a land aerodrome
shall show at all angles of azimuth. The vertical light distribution
shall extend upwards from an elevation of not more
than lo to an elevation determined by the appropriate authority
to be sufficient to provide guidance at the maximum elevation
.at which the beacon is intended to be used and the effective
intensity of the flash shall be not less than 2 000 cd.
Note.- At locations where a high ambient background
lighting level cannot be avoided, the effective intensity of the
flash may be required to be increased by a factor up to a value
of 10.
5.3.3.12 An identification beacon shall show flashinggreen
at a land aerodrome and flashing-yellow at a water
aerodrome.
5.3.3.13 The identification characters shall be transmitted
in thc International Morse Code.
5.3.3.14 Recommendation.- The speed of transmission
should be between sir and eight words per minute, the corresponding
range of duration of the Morse dots being fiom 0.15
to 0.2 seconds per dot.
5.3.4 Approach Iighting systems
Note.- It is intended that existing lighting systems not
conforming to the specifcations in 5.3.4.21, 5.3.4.39, 5.3.9.10,
5.3.10.10, 5.3.10.11, 5.3.11.5, 5.3.12.8, 5.3.13.6 and 5.3.16.8
be replaced not later than 1 Januory 2005.
Application
5.3.4.1 Application
A.- Non-instrument runway
Recommendation.- Where ~hysically practicable, a
5.3.3.8' An identification beacon shall be provided at an
　
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