Document ID: chunk:federal_register_of_legislation:F2024C01244:reg:4:p2
Version: federal_register_of_legislation:F2024C01244
Segment Type: reg
Provision Reference: reg 4 (pt 2/15)
Character Range: 199504–202140

runway strip (slope changes) must not exceed 2%.

       (2) The slope changes:

(a) must be gradual; and

(b) must not be abrupt; and

(c) must not involve sudden reversal of slopes.

6.20 Radio altimeter operating area

       (1) For precision approach SA CAT I, SA CAT II, CAT II and CAT III runways — there must be no longitudinal slope changes on the portion of the graded area of a runway strip mentioned in subsection (2).

       (2) For subsection (1), the portion is the area, immediately before the threshold, that is 60 m wide, 300 m long, and symmetrical about the centreline (radio altimeter operating area).

       (3) Despite subsection (1), if it is physically impossible to avoid a slope change on a radio altimeter operating area, the rate of change between 2 consecutive slopes must not exceed 2% per 30 m (that is, a minimum radius of curvature of 1 500 m).

6.21 Runway strip transverse slope

       (1) Subject to subsection (2), the design transverse slope of the graded area of the runway strip must not exceed:

(a) for a code 3 or 4 runway — 2.5%; and

(b) for a code 1 or 2 runway — 3%.

       (2) For the first 3 m of the graded runway strip:

(a) adjacent to the runway edge; or

(b) adjacent to the runway shoulder;

        the design transverse slope:

(c) must slope downwards; and

(d) may be up to 5%.

       (3) Subject to subsection (4) and section 6.21A, no portion of the fly-over area of a runway strip, and no object or structure on the fly-over area, may project through a plane that:

(a) starts along each outer side of the graded area; and

(b) has an upward slope away from the graded area of 5%.

Note   The plane commences from the ground level associated with the edge of the graded area.

       (4) Navigational aids for the guidance of aircraft or vehicles may project through the plane described in subsection (3) if approved in writing by CASA under subsection 7.02 (1).

6.21A Protection of the fly-over area of a runway strip

       (1) At a certified aerodrome, a prescribed thing that is used for a prescribed purpose may project through the plane described in subsection 6.21 (3), but only if, when, and for as long as, the conditions under subsection (3) of this section are complied with.

Note   The expressions prescribed things and prescribed purposes are defined in subsection (2).

       (2) For subsection (1):

(a) a prescribed thing is any of the following on the fly-over area of a runway strip (the relevant area):

           (i) an airside vehicle, including anything that is part of the vehicle, and any mobile or moveable object, machine or equipment