Document ID: chunk:federal_register_of_legislation:F2024C01244:reg:5:p78
Version: federal_register_of_legislation:F2024C01244
Segment Type: reg
Provision Reference: reg 5 (pt 78/225)
Character Range: 516201–519078

is repaired; and

           (iii) notify CASA as soon as possible of the outage.

       Note   For CASA determining that an obstacle light is essential for aviation safety, see subsection 7.19 (1).

       (3) The aerodrome operator's aerodrome manual must include the following:

(a) details of, and procedures for, the obstacle lights serviceability monitoring program;

(b) the procedures to be followed when an obstacle light outage occurs;

(c) details of the following:

 (i) any CASA approval under paragraph (1) (a), (1) (b) or (1) (d);

 (ii) any CASA determination mentioned in paragraph (2) (c).

CHAPTER 9

Division 5 Aerodrome lighting systems

9.37 Aerodrome beacons

       (1) An aerodrome operator may provide an aerodrome beacon.

       (2) If an aerodrome beacon is provided, it must be located as follows:

(a) on the surface of, or adjacent to, the aerodrome;

(b) in an area of low ambient background lighting;

(c) such that it is not shielded by obstacles;

(d) such that it is not dazzling to a pilot making an approach to land.

       (3) Subject to subsection (4), an aerodrome beacon at an aerodrome must show white flashes only.

       (4) An aerodrome beacon at:

(a) an international aerodrome; or

(b) an aerodrome in a built-up area;

        must give 2 alternating flashes, 1 white and the other coloured green.

       (5) For subsection (4), the effective intensity of the green flashes must not be less than 0.15 times the intensity of the white flashes at the corresponding angle of elevation.

       (6) Subject to subsection (7), for any aerodrome beacon, the frequency of flashes must be from 20 to 30 flashes per minute.

       (7) The light from an aerodrome beacon must be visible from all angles of azimuth.

       (8) The light intensity distribution of an aerodrome beacon must be such that for an elevation angle mentioned in a row in column 1 of Table 9.37 (8), the minimum effective intensity of white flashes must be that shown in the same row in column 2.

  Table 9.37 (8)   Aerodrome beacon light intensity distribution

Elevation angle (in degrees)  Minimum effective intensity of white flashes (in candelas)
1 to 2                        25 000
2 to 8                        50 000
8 to 10                       25 000
10 to 15                      5 000
15 to 20                      1 000

9.38 Illuminated wind direction indicators

       (1) Without affecting subsection (2), at an aerodrome intended for night use, at least 1 wind direction indicator (WDI) must be lit in accordance with this section.

       (2) If an additional WDI is provided in the vicinity of the threshold of an instrument runway, the WDI must be lit at night as an illuminated WDI (IWDI) unless:

(a) surface wind information is available through a broadcast aerodrome weather information service (an AWIS) or a person mentioned