Document ID: chunk:federal_register_of_legislation:F2024C01244:reg:5:p31
Version: federal_register_of_legislation:F2024C01244
Segment Type: reg
Provision Reference: reg 5 (pt 31/225)
Character Range: 395385–398231

of 800 m or more

Sign Colour  Average sign luminance
Red          10 cd/m2
Yellow       50 cd/m2
White        100 cd/m2

       (6) The luminous ratio between the red and white elements of a mandatory instruction sign must not be less than 1:5 and not greater than 1:10.

Note   CASA recommends that the average luminance of the MAGS be calculated in accordance with ICAO Annex 14, Aerodromes, Volume 1, Aerodrome Design and Operations, Appendix 4, Figure A4-1, as in force or existing from time to time. For ICAO documents, see section 1.07.

       (7) The comparative luminance values of adjacent grid cells within a sign must not exceed:

(a) a ratio of 1.5:1 for grid cells that are 15 cm2; and

(b) a ratio of 1.25:1 for grid cells that are 7.5 cm2.

Note   "Grid cells" within a sign is a variable construct which depends upon the technique being applied and the number of grid squares used.

       (8) The ratio between the maximum and minimum luminance value over the whole of a sign face must not exceed 5:1.

       (9) The sign specifically provided at an aerodrome for LAHSO must be illuminated when the lighting of the runway on which LAHSO are conducted is switched on.

Note   MAGS specifically provided for LAHSO include, for example, runway/runway intersection signs and distance-to-go signs.

       (10) Runway exit signs that are required for LAHSO must be illuminated when LAHSO are conducted at night.

Note   CASA recommends that signs use red, white, yellow and black colours that comply with the relevant recommendations in ICAO Annex 14, Aerodromes, Volume 1, Aerodrome Design and Operations, Appendix 1, for externally illuminated signs, retroreflective signs and transilluminated signs, as applicable. For ICAO documents, see section 1.07.

8.86 MAGS with mandatory instructions

        Mandatory instruction MAGS include the following:

(a) runway designation signs;

(b) CAT I, II or III holding position signs;

(c) runway holding position signs;

(d) aircraft NO ENTRY signs;

(e) vehicular STOP signs;

(f) runway/runway intersection signs.

8.87 Runway designation signs

       (1) At the intersection of a runway with a taxiway with a pattern "A" runway holding position marking, a runway designation sign must be provided as illustrated in Figure 8.87 (1).

       (2) If the taxiway intersection is located at or near the end of the runway, only the designation for 1 end of the runway must be shown.

       (3) If the taxiway intersection is not located at or near the end of the runway, designations for both ends of the runway must be shown, properly orientated for each sign to be relevantly viewed.

       (4) A taxiway location sign must be provided alongside the runway designation sign, in the outboard (that is, farthest from the taxiway) position.

       (5) A runway designation sign must