Document ID: chunk:federal_register_of_legislation:F2024C01244:reg:4:p16
Version: federal_register_of_legislation:F2024C01244
Segment Type: reg
Provision Reference: reg 4 (pt 16/21)
Character Range: 182229–185039

above the surface.
C, D, E or F  600 m — when viewed at a height of 3 m above the surface.

6.08 Transverse slopes on runways

       (1) The transverse slope on any part of a runway must not permit the pooling or ponding of water on the runway.

       (2) For design purposes, a transverse slope on a runway must be within the range of the percentage figures in column 1 in Table 6.08 (2) but a construction tolerance above or below the range is allowed within the limits specified in column 2.

      Table 6.08 (2)   Runway transverse slope values
Design slope  Construction tolerance
1.0% - 2.0%   ± 0.5%

       (3) The runway transverse slope values expressed in Table 6.08 (2) do not apply at the intersection of a runway with another runway or a taxiway if:

(a) there are conflicting drainage requirements or slope requirements; and

(b) alternative runway transverse slope values are as follows:

 (i) arrived at after a safety analysis using the safety management system and the risk management plan;

 (ii) as close as practicable to the values expressed in Table 6.08 (2);

 (iii) demonstrably safe for aircraft operations;

 (iv) recorded in the aerodrome manual.

6.09 Runway surface

       (1) The surface of a sealed runway:

(a) must not have any irregularities that:

 (i) excluding markings, impair the minimum runway surface friction required under paragraph (1) (b) or subsection (5); or

          Note   CASA recommends that paint which, when applied, would leave a thick film, should be avoided, for example, paint normally used for vehicle road markings.

 (ii) otherwise adversely affect the safety of take-off or landing; and

(b) subject to subsection (5), must have:

           (i) for an un-grooved surface — an average surface texture depth of at least that stated in column 1 of Table 6.09 (1)-1 over the full length and width of the runway, as measured using sand patch tests in accordance with subsection (2); or

           (ii) for any surface — a minimum measured coefficient of friction level greater than the minimum friction level specified in Table 6.09 (1)-2; and

(c) if the surface is grooved — must have grooves that are:

 (i) perpendicular to the runway centreline; and

 (ii) if compliance with subparagraph (i) is not physically possible — parallel to transverse joints that are not perpendicular to the runway centreline; and

 (iii) extended as close as possible to the runway edge.

      Table 6.09 (1)-1   Average surface texture depth
Minimum average texture depth  Preferred average texture depth
0.625 mm                       1 mm

Note   Average means the average of results within a test area, and not results averaged across multiple test areas.

    (2) Tests that satisfy paragraph (1) (b) must be carried out in accordance with ICAO Airport