CS ADR-DSN.H.435 Take-off climb surface

(a)Applicability: The purpose of the take-off climb surface is to protect an aircraft on take-off and during climb-out.

(b)Description: An inclined plane or other specified surface beyond the end of a runway or clearway.

(c)Characteristics: The limits of the take-off climb surface should comprise:

(1)an inner edge horizontal and perpendicular to the centre line of the runway, and located either at a specified distance beyond the end of the runway, or at the end of the clearway when such is provided, and its length exceeds the specified distance;

(2)two sides originating at the ends of the inner edge, diverging uniformly at a specified rate from the take-off track to a specified final width and continuing thereafter at that width for the remainder of the length of the take-off climb surface; and

(3)an outer edge horizontal and perpendicular to the specified take-off track.

(d)The elevation of the inner edge should be equal to the highest point on the extended runway centre line between the end of the runway and the inner edge, except that when a clearway is provided, the elevation should be equal to the highest point on the ground on the centre line of the clearway.

(e)In the case of a straight take-off flight path, the slope of the take-off climb surface should be measured in the vertical plane containing the centre line of the runway.

(f)In the case of a take-off flight path involving a turn, the take-off climb surface should be a complex surface containing the horizontal normals to its centre line, and the slope of the centre line should be the same as that for a straight take-off flight path.