Document ID: chunk:federal_register_of_legislation:F2024C01244:reg:5:p55
Version: federal_register_of_legislation:F2024C01244
Segment Type: reg
Provision Reference: reg 5 (pt 55/225)
Character Range: 456517–459423

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

       (1) The time interval between failure of the primary power supply and the complete restoration of power following switch-over to a secondary power supply must not exceed:

(a) for precision approach CAT I visual aids — 15 seconds;

(b) for precision approach CAT II and CAT III visual aids that are:

          (i) essential obstacle lights — 15 seconds; and

          (ii) essential taxiway lights — 15 seconds; and

          (iii) all other visual aids — 1 second;

(c) for runways meant for take-off in RVR conditions less than 800 m:

           (i) for essential obstacle lights — 15 seconds; and

           (ii) for essential taxiway lights including no entry bars — 15 seconds; and

           (iii) for runway edge lights, if runway centreline lights are provided — 15 seconds; and

           (iv) for runway edge lights, if runway centreline lights are not provided — 1 second; and

 (v) for runway end lights — 1 second; and

 (vi) for runway centreline lights — 1 second; and

 (vii) for all stop bars — 1 second.

Note   For subsection 9.05 (1), alerting of the generators is an acceptable method of achieving the required switch-over times.

       (2) If alerting the generators is the method used to switch over to secondary power within the time frames specified in subsection (1), then the method must:

(a) ensure that each generator is started and can meet the required power demand:

           (i) before commencement of low visibility; or

           (ii) as soon as weather conditions indicate that electrical power from the primary power supply may reasonably be susceptible to interruption; and

(b) if the primary power supply fails — ensure that the electrical system automatically reconnects the load to the secondary power supply.

       (3) If alerting of the generators is the method used to switch over to secondary power within the timeframes specified in subsection (1) for:

(a) CAT II or CAT III precision approaches; or

(b) take-offs in RVR conditions less than 800 m;

        then the aerodrome operator must supply real-time information to ATC on the operating status of:

(c) each generator set; and

(d) the primary power supply.

9.06 Stand-by power supply

Note   There is an operational benefit in a runway lighting system being notified in the AIP-ERSA as having stand-by power or portable lighting available. Stand-by power is normally for non-instrument or non-precision runway lighting systems.

       (1) The AIP-ERSA must record whether an aerodrome lighting system has a stand-by power supply and, if so, whether the stand-by power supply is:

(a) automatic;