Document ID: chunk:federal_register_of_legislation:F2024C01244:reg:5:p54
Version: federal_register_of_legislation:F2024C01244
Segment Type: reg
Provision Reference: reg 5 (pt 54/225)
Character Range: 453879–456796

circuits, must be designed so that a lighting equipment failure does not leave the pilot of an aircraft using the manoeuvring area with inadequate visual guidance or misleading information.

Note   Interleaf circuitry is recommended for aerodromes intended for precision approach operations. Guidance on this may be found in ICAO Document 9157, Aerodrome Design Manual – Part 5, Electrical. For ICAO documents, see section 1.07.

9.03 Primary electrical power supply

        An aerodrome lighting system must have a primary electrical power supply (primary power supply) which ensures the continued and full operation of the system in accordance with this MOS.

9.04 Secondary electrical power supply

       (1) A secondary electrical power supply (secondary power supply) must enable continued and complete operation of each of the following lighting systems (if installed) in the event of a failure of the primary power supply:

(a) approach;

(b) visual approach slope indicator;

(c) runway edge;

(d) runway threshold;

(e) runway end;

(f) runway centreline;

(g) touchdown zone;

(h) taxiway;

(i) runway guard lights;

(j) no entry bars and stop bars;

(k) apron;

(l) illuminated wind direction indicators;

(m) mandatory movement area guidance signs (if provided);

(n) other movement area guidance signs essential for the safety of air navigation;

(o) such aerodrome obstacle lighting as is determined by CASA, in writing, to be essential for the safety of aircraft operations.

Note 1   Paragraph 9.04 (1) (o) is not applicable to off-aerodrome obstacle lighting.

Note 2   CASA recommends that a secondary electrical power supply be provided for aids that are essential for the safety of air navigation, for example automatic weather information broadcasts and automatic aerodrome frequency response units.

       (2) If an aerodrome has 1 or more runways intended for precision approach CAT I operations, the lighting for at least 1 of the CAT I runways must have a secondary power supply.

       (3) If an aerodrome has 1 or more runways intended for precision approach CAT II or CAT III operations, the lighting for at least 1 of the CAT II or CAT III runways (the relevant runway) must have a secondary power supply.

       (4) Each runway from which aircraft are intended to take off in RVR conditions less than 800 m must have a secondary power supply to enable the operation of each of the following lighting systems (if installed):

(a) runway edge;

(b) runway end;

(c) runway centreline;

(d) stop bars;

(e) runway guard lights, when stop bars are not being used;

(f) essential taxiway lights, including no entry bars;

       Note   CASA considers taxiway routes for operations in conditions less than 800 m to be essential.

(g) essential obstacle lights.

        Note   For essential obstacle lights, see paragraph 9.04 (1) (o).

9.05 Switch-over time for secondary power supply