CS ADR-DSN.H.415 Conical surface

(a)Applicability: The purpose of the conical surface is to facilitate safe visual manoeuvring in the vicinity of the aerodrome.

(b)Description: A surface sloping upwards and outwards from the periphery of the inner horizontal surface.

(c)Characteristics: The limits of the conical surface should comprise:

(1)a lower edge coincident with the periphery of the inner horizontal surface; and

(2)an upper edge located at a specified height above the inner horizontal surface.

(d)The slope of the conical surface should be measured in a vertical plane perpendicular to the periphery of the inner horizontal surface.