Document ID: chunk:federal_register_of_legislation:F2024C01244:reg:5:p111
Version: federal_register_of_legislation:F2024C01244
Segment Type: reg
Provision Reference: reg 5 (pt 111/225)
Character Range: 598945–601486

than 350 m — 15 m; and

(b) on a runway intended for use in RVR conditions of 350 m or greater — 30 m.

       (3) The runway centreline lights may be offset by not more than 0.6 m from the true runway centreline.

       (4) For subsection (3), the offset must, as far as possible, be:

(a) on the left-hand side of the landing aircraft; or

(b) for a runway used in both directions — on the left-hand side of the landing aircraft from the direction from which the majority of landings take place.

       (5) Runway centreline lights must:

(a) be inset, fixed lights; and

(b) show white from the threshold to a point 900 m from the runway end; and

(c) from 900 m to 300 m from the runway end — have a light pattern of 2 red lights followed by 2 white lights; and

(d) for the last 300 m before the runway end — show red.

Note   The double red and white alternating light arrangement is for interleaving circuitry, to ensure that failure of part of the electrical system does not result in a false indication of the runway distance remaining.

       (6) For runway centreline lights, the light intensity and distribution must be in accordance with:

(a) for lights with 30 m spacing — that shown in Figure 9.75 (8); and

(b) for lights with 15 m spacing — that shown in Figure 9.75 (9).

9.71 Simple touchdown zone (TDZ) lights

Note 1   The purpose of simple TDZ lights is to provide pilots with enhanced situational awareness in all visibility conditions and to help enable pilots to decide whether to commence a go-around if the aircraft has not landed by a certain point on the runway. It is essential that pilots operating at aerodromes with simple TDZ lights be familiar with the purpose of these lights.

Note 2   There is an increased risk of an overrun event occurring at an aerodrome where the approach angle is greater than 3.5 degrees or where a limiting landing distance available combines with other risk factors. CASA recommends the provision of simple TDZ lights where touchdown lights are not otherwise available, in order to enhance situational awareness.

       (1) If provided, simple TDZ lights must comprise 2 pairs of lights with a pair located on each side of the runway centreline 0.3 m beyond the upwind edge of the final TDZ marking, as shown in Figure 9.71 (1).

       (2) The lateral spacing between the inner lights of each pair of lights must be equal to the lateral spacing selected for the TDZ marking.

       (3) The spacing between the lights of the same pair must not be more than the greater of