Document ID: chunk:federal_register_of_legislation:F2024C01244:reg:5:p106
Version: federal_register_of_legislation:F2024C01244
Segment Type: reg
Provision Reference: reg 5 (pt 106/225)
Character Range: 586756–589553

outward from a line parallel to the runway centreline and inclined at an angle of 10° above the horizontal.

Note   As a guide, runway threshold identification lights should have an acquisition of approximately 7 km in bright sunlight.

9.60 Temporarily displaced threshold lights for use at night

        If the threshold of a runway is temporarily displaced, temporarily displaced threshold lights must be provided at night to identify the new threshold location.

9.61 Location of temporarily displaced threshold lights

        For section 9.60, temporarily displaced threshold lights must be provided on each side of the runway:

(a) in line with the displaced threshold; and

(b) at right angles to the runway centreline; and

(c) with the innermost light on each side aligned with the runway edge lights on the corresponding side of the threshold.

9.62 Characteristics of temporarily displaced threshold lights

        Temporarily displaced threshold lights must conform to the following requirements:

(a) subject to paragraph (b), an array on each side of the runway must consist of 5 lights;

(b) for a runway whose width is 30 m or less — each side array may consist of 3 lights instead of 5;

(c) the lights must be spaced 2.5 m apart;

(d) for runways with visual circling or circuit operations — the innermost light of each side array may be a fixed, omnidirectional light showing green in all angles of azimuth;

(e) the outer 4 or 2 lights, as appropriate, of each side array must be fixed, unidirectional lights showing green in the direction of approach over not less than 38°, and not more than 180°, of azimuth;

(f) the light distribution in the direction of approach must be as close as possible to that of the runway edge lights;

(g) the light intensity must be as close as possible to 1.5 times that of the runway edge lights but               not be less than that of the runway edge lights.

Note   Temporarily displaced threshold lights are associated only with non-instrument or non-precision instrument approach runway lighting systems. If a precision approach runway has the threshold temporarily displaced, it typically renders ILS unavailable for precision approaches, thus temporarily changing the runway to a non-precision or non-instrument runway. For runways with a GLS, operations are not likely to be affected.

9.63 Runway lighting before a displaced threshold

       (1) If part of a runway located before a displaced threshold is available for aircraft use, runway edge lights in that part of the runway must:

(a) show red in the direction of approach to the displaced threshold, with a light intensity of not less than one-quarter, and not more than one-half, that of the white runway edge lights; and

(b) in the opposite direction, show:

 (i)