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(a) The Director may designate visual reporting points for the purpose of—
(1) facilitating the requirements of air traffic services for information regarding the progress of aircraft in flight; or
(2) facilitating the safe conduct of flight by visual reference.
(b) The Director must ensure that visual reporting points —
(1) are based on prominent geographical features; and
(2) are identified by names or designators that—
(i) are easily recognisable in voice communications; and
(ii) will not be confused with those of other reporting points in the same general area; and
(iii) do not create confusion with other communications exchanged between pilots and between air traffic services and pilots.
The Director may designate as an area QNH zone those portions of airspace from the surface of the earth to a specified altitude within which a common area QNH altimeter setting must be used.
The Director may designate a portion of airspace as a mountainous zone if, in the interests of safety, the Director considers it necessary to increase the minimum obstacle clearance to provide additional height above terrain for IFR flights to accommodate the possible effects of turbulence, down draughts, and other meteorological phenomena on the performance of aircraft.
