Document ID: chunk:federal_register_of_legislation:F2024C01244:reg:5:p63
Version: federal_register_of_legislation:F2024C01244
Segment Type: reg
Provision Reference: reg 5 (pt 63/225)
Character Range: 477633–480468

or
Note   The presentation of green within this boundary is recommended where observers with defective colour vision are required to determine the green colour of the light signal as opposed to other colours.

(b) these:

           Yellow boundary x = 0.310
           White boundary x = 0.625y – 0.041
           Blue boundary y = 0.726 – 0.726x
Note   The specifications under paragraphs (a) and (b) must not be used together within the same lighting system.

     Figure 9.15   Colours for solid state (LED) aeronautical ground lights

9.16 Discrimination between incandescent coloured lights

       (1) If there is a requirement to discriminate yellow and white from each other, they must each be displayed in close proximity in time or space, for example, by being flashed successively from the same beacon.

       (2) If there is a requirement to discriminate yellow from green or white, for example, with exit taxiway centreline lights, the value of the "y" coordinate of the yellow light must be less than 0.40.

Note   The limits of white are based on the assumption that they are used in situations in which the characteristics of the light source, for example, colour and temperature, are substantially constant.

       (3) The colour variable white is intended to be used only for lights that must be varied in intensity to avoid dazzling. If these lights must be distinguished from yellow lights, they must be designed and operated so that:

(a) the "x" coordinate of the yellow is at least 0.050 greater than the "x" coordinate of the white; and

(b) the disposition of the lights is such that the yellow lights are displayed simultaneously and in close proximity to the white lights.

CHAPTER 9

Division 2 Commissioning

9.17 Commissioning of lighting systems — ground checks

       (1) Before an aerodrome lighting system is first used, including after an upgrade or a replacement:

(a) the system must be commissioned through:

 (i) a ground check in accordance with this section; and

 (ii) a flight check as required in accordance with section 9.18; and

(b) written evidence, verifying the commissioning process, must be provided to CASA in the form of:

 (i) the ground check determination; and

 (ii) the flight check report.

       (2) A ground check must be conducted by a qualified person who:

(a) has demonstrable relevant aerodrome lighting knowledge and experience; and

(b) is either:

 (i) an electrical engineer; or

 (ii) a licensed electrician.

       (3) A ground check of a VASIS must be conducted by a person who:

(a) has demonstrable knowledge of how to site, set up and protect a VASIS; and

(b) is either:

 (i) technically qualified or experienced in surveying; or

 (ii) a civil engineer with survey experience.

       (4) A ground check of a VASIS must include the following: