GM1 HPT-DSN.F.600 Helicopter air taxiway markings and markers

(a)Helicopter air taxi-routes are not required to be marked.

(b)Where a helicopter air taxiway could be confused with a helicopter ground taxiway, signage should be provided to indicate the mode of taxi operations that are permitted.

(c)Helicopter air taxiway edge markers should not be located at a distance from the centre line of the helicopter air taxiway of less than 0.5 times the largest overall width of the helicopter for which it is designed.

(d)Helicopter air taxiway edge markers should not penetrate a plane originating at a height of 25 cm above the plane of the helicopter air taxiway, at a distance from the centre line of the helicopter air taxiway of 0.5 times the largest overall width of the helicopter for which it is designed, and sloping upwards and outwards at a gradient of 5 per cent.