Document ID: chunk:federal_register_of_legislation:F2024C01244:reg:5:p142
Version: federal_register_of_legislation:F2024C01244
Segment Type: reg
Provision Reference: reg 5 (pt 142/225)
Character Range: 679780–682588

the lighted visual aid is located on the runway during periods of daylight, the surface of the aid facing the pilot must be:

(a) coloured yellow; or

(b) obstacle marked in accordance with section 8.111; or

(c) otherwise illuminated.

9.130 Isocandela diagram for lighted visual aid to indicate temporary runway closure

       (1) For a lighted visual aid to indicate a temporary complete runway closure:

(a) Figure 9.130 (1) illustrates the required beam pattern; and

(b) the minimum intensity of the main beam pattern is to be calculated by:

 (i) establishing grid points with reference to the main beam as illustrated in Figure 9.130 (1); and

 (ii) using the intensity values, as specified in paragraphs 9.129 (2) (e) and (f) within and on the perimeter of the circles representing the main beam pattern; and

 (iii) using the arithmetic average of the light intensities measured at all the considered grid points to resolve the average value.

       (2) There must be no deviations in the main beam when the lighting fixture is properly aimed.

       (3) Vertical angles must be measured from the longitudinal slope of the runway surface.

       (4) The light unit must be installed so that the main beam is aligned within 0.5 degrees of the specified requirement.

       (5) On the perimeter of, and within, the circle defining the main beam, the maximum light intensity value must not exceed the lessor of:

(a) 3 times the minimum light intensity so measured; or

(b) the limit at which the light intensity would otherwise dazzle or distract a pilot during the expected ambient light and visibility conditions in which the lighted visual aid is intended to be used.

     Figure 9.130 (1)   Beam pattern diagram for lighted visual aid to indicate a temporary runway closure (illustrates matters)

9.131 Movement area access in the vicinity of unserviceable areas

       (1) If a closed runway or taxiway, or a portion of a closed runway or taxiway (the closed area) is intersected by a runway or taxiway which is used at night, unserviceability lights must be placed across the entrance to the closed area at intervals not exceeding 3 m.

       (2) If:

(a) any portion of a taxiway, an apron or a holding bay is unfit for the movement of aircraft (the unserviceable area); and

(b) it remains possible for an aircraft to safely bypass the unserviceable area; and

(c) the movement area is used at night;

        then unserviceability lights, not more than 7.5 m apart, must clearly delineate the unserviceable area.

9.132 Characteristics of unserviceability lights

        Unserviceability lights must:

(a) be steady red lights; and

(b) have:

 (i) an intensity that is sufficient to ensure conspicuity considering the intensity of the adjacent lights and the general level of