Document ID: chunk:federal_register_of_legislation:F2024C01244:reg:5:p61
Version: federal_register_of_legislation:F2024C01244
Segment Type: reg
Provision Reference: reg 5 (pt 61/225)
Character Range: 472101–475054

a lighting system used to control aircraft movement; and

(b) relay the information to the lighting system operator:

           (i) for a stop bar at a runway holding position — within 2 seconds of generating the information mentioned in paragraph (a); and

           (ii) for all other types of visual aid — within 5 seconds of generating the information mentioned in paragraph (a).

Note   CASA recommends that a runway meant for use in runway visibility, or RVR, less than 550 m should have a suitable monitoring system for informing ATC and the operator's maintenance crew when the serviceability level of any of the following lighting systems falls below the minimum level for the system:
(a) approach lighting;
(b) runway centreline;
(c) runway threshold;
(d) runway edge;
(e) touchdown zone;
(f) runway end;
(g) stop bars and no entry bars;
(h) essential taxiways.

9.13 Colours for aeronautical ground lights

 (1) Light fittings using different filter technologies must not be mixed in a way that creates inconsistency in light colour or intensity when the light is viewed by the pilot of an aircraft moving on a runway or taxiway.

Note   Different filter technologies include dichroic filters, other absorption filters, and light emitting diodes (LEDs).

       (2) The colour of aeronautical ground lights must be verified by the manufacturer or supplier as being within the boundaries specified in Figures 9.14 and 9.15, by measurement at 5 points within the area limited by the innermost isocandela curve with operation at rated current or voltage.

       (3) For elliptical or circular isocandela curves, the colour measurements must be taken at the centre and at the horizontal and vertical limits.

       (4) For rectangular isocandela curves, the colour measurements must be taken at the centre and the limits of the diagonals (that is, the corners).

       (5) The colour of aeronautical ground lights must be checked at the outermost isocandela curve to ensure that there is no colour shift that might cause signal confusion to a pilot.

       (6) In the case of a VASI or other light unit having a colour transition sector, the colour must be measured at points in accordance with subsections (3) and (4), except that:

(a) the colour areas must be treated separately; and

(b) no point may be within 0.5 degrees of the transition sector.

9.14 Chromaticity for incandescent lights

  Aerodrome incandescent lighting must comply with the chromaticity boundaries as shown in Table 9.14 and Figure 9.14.

        Note   The chromaticities are expressed in terms of the standard observer and coordinate system adopted by the International Commission on Illumination (CIE).

    Table 9.14 Chromaticity for incandescent lights

Red
            Purple boundary y = 0.980 – x
            Yellow boundary
            (visual approach light
            indicator systems only) y = 0.320
            Yellow boundary
            (all