Document ID: chunk:federal_register_of_legislation:F2024C01244:reg:5:p66
Version: federal_register_of_legislation:F2024C01244
Segment Type: reg
Provision Reference: reg 5 (pt 66/225)
Character Range: 485620–488553

system.
Note   Changes which CASA may consider would constitute a substantial change include any of the following:
       (a) removal and replacement, at the same time, of 50% or more of the light fittings, or type of light source within an approach or runway lighting system;
       (b) removal and replacement of 1 or more light units of a PAPI;
       (c) removal and replacement, at the same time, of 2 or more light units of an AT-VASIS;
       (d) replacement of the transceiver installation from a PAL.
       (8) A separate copy of each ground check report, each flight check report, and each independent compliance statement or light fitting laboratory test report used to support the commissioning of a lighting system must be retained by the aerodrome operator for as long as the relevant lighting system remains in service, with details of each report included in the aerodrome operator's aerodrome manual.
CHAPTER 9

Division 3 Pilot-activated lighting systems

9.19 General

       (1) A pilot-activated lighting system (a PAL) must turn on all the lighting facilities required for aircraft operations at night, unless the lighting facility is turned on by other means.

Note   An example of other means is a photo-electric switch or timer.

       (2) If a PAL is used to activate a VASIS, the following requirements apply:

(a) activation of the PAL during daytime must:

 (i) turn the VASIS on to the day intensity setting; and

 (ii) leave all other aerodrome lighting off;

(b) activation of the PAL during twilight must:

 (i) turn the VASIS on to the twilight intensity setting; and

           (ii) turn all other aerodrome lighting on to:

             (A) the only other intensity available; or

             (B) night intensity if multiple intensities are available;

(c) activation of the PAL during night-time must:

           (i) turn the VASIS on to night intensity; and

           (ii) turn all other aerodrome lighting on to:

             (A) the only other intensity available; or

             (B) night intensity if multiple intensities are available;

(d) if the lighting has been activated by the PAL — appropriate changes from day to twilight to night intensities must take place automatically;

(e) the appropriate changes from day to twilight to night operation must take place under the control of:

 (i) a light sensitive switch or similar device; or

          Note   For guidance in setting up the light sensitive switch, the following values of background illuminance are suggested, though other values, or an illuminance meter, may be used if they provide a better match to local visibility conditions:
            (a) day — illuminance above 500 lux;
            (b) twilight — illuminance between 50 and 500 lux;
            (c) night — illuminance below 50 lux.

 (ii) a switching system that will ensure the correct intensity setting between day, twilight and night.

    (3) If,