Document ID: chunk:federal_register_of_legislation:F2024C01244:reg:5:p87
Version: federal_register_of_legislation:F2024C01244
Segment Type: reg
Provision Reference: reg 5 (pt 87/225)
Character Range: 538549–541272

row lights

       (6) The side row lights must be placed:

(a) on each side of the centreline; and

(b) at a longitudinal spacing equal to that of the centreline lights; and

(c) aligned with the centreline lights; and

(d) so that the lateral spacing between the innermost lights of the side rows is:

 (i) not less than 18 m nor more than 22.5 m; and

 (ii) within the limits specified in subparagraph (i) — as close as possible to the spacing between the runway touchdown zone lights.

        Crossbar lights

       (7) The crossbar provided at Point A must fill in the gaps between the centreline and side row lights.

       (8) The crossbar provided at Point B must extend on both sides of the centreline lights to a distance of 15 m from the centreline.

       (9) If the centreline beyond Point B consists of lights as described in subsection (14), additional crossbars of lights must be provided at Points C, D and E (where these locations are included within the overall length of the system).

       (10) If the additional crossbars described in subsection (9) are incorporated in the system, the outer ends of these crossbars must lie on 2 straight lines that converge to meet the runway centreline 300 m from the threshold.

       (11) The lighting system must lie as nearly as possible in the horizontal plane passing through the threshold, and be such that:

(a) no object, obstacle or structure, other than an ILS localiser antenna or a far field monitor antenna, may protrude through the plane of the approach lights within a distance of 60 m from the centreline of the system; and

       Note   All roads and highways are considered as obstacles extending 4.8 m above the crown of the road, except aerodrome service roads where all vehicular traffic is under control of the aerodrome authorities and coordinated with the aerodrome traffic control tower. Railroads, regardless of the amount of traffic, are considered as obstacles extending 5.4 m above the top of the rails.

(b) no light, other than a light located within the central part of a crossbar or a centreline barrette (not their extremities), may be screened from an approaching aircraft.

       (12) An ILS localiser antenna or a far field monitor antenna protruding through the plane of the lights must be treated as an obstacle and marked and lighted as an obstacle.

        Centreline lights

       (13) The centreline of a precision approach CAT II or CAT III lighting system from the threshold to Point B must consist of barrettes showing variable white. However, if the threshold is displaced 300 m or more, the centreline may consist of single light sources showing variable white.

       (14) Beyond Point B, each centreline