CS HPT-DSN.F.590 Helicopter ground taxiway markings and markers

(a)Applicability:

(1)The specifications for runway-holding position markings defined in CS ADR-DSN.L.575 and for intermediate holding position marking defined in CS ADR-DSN.L.580 are equally applicable to taxiways intended for ground taxiing of helicopters.

(2)The centre line of a helicopter ground taxiway should be identified with a marking.

(3)The edges of a helicopter ground taxiway, if not self-evident, should be identified with markers or markings.

(b)Location:

(1)Helicopter ground taxiway markings should be along the centre line, and, if provided, along the edges of a helicopter ground taxiway.

(2)Helicopter ground taxiway edge markers should be located at a distance of 0.5 m to 3 m beyond the edge of the helicopter ground taxiway.

(3)Where provided, helicopter ground taxiway edge markers should be spaced at intervals of not more than 15 m on each side of straight sections and 7.5 m on each side of curved sections with a minimum of four equally spaced markers per section.

(c)Characteristics:

(1)A helicopter ground taxiway centre line marking should be a continuous yellow line 15 cm in width.

(2)Helicopter ground taxiway edge markings should be a continuous double yellow line, each 15 cm in width, and spaced 15 cm apart (nearest edge to nearest edge).

(3)A helicopter ground taxiway edge marker should not exceed the height of a plane originating at a height of 25 cm above the plane of the helicopter ground taxiway, at a distance of 0.5 m from the edge of the helicopter ground taxiway and sloping upwards and outwards at a gradient of 5 per cent to a distance of 3 m beyond the edge of the helicopter ground taxiway.

(4)Helicopter ground taxiway edge markers should be frangible to the wheeled undercarriage of helicopters.

(5)A helicopter ground taxiway edge marker should be blue.

(6)If the helicopter ground taxiway is to be used at night, the edge markers should be internally illuminated or retro-reflective.