(1) A PIC of an aeroplane may only conduct Special VFR operations in weather conditions below the conditions prescribed in regulation 91.06.21 within a control zone (CTR)—
(a) under the terms of an air traffic control clearance;
(b) by day only;
(c) with a cloud ceiling of at least 600 ft and visibility of at least 1 500 m, measured from the aerodrome reference point;
(d) when the Special VFR flight will not unduly delay an IFR flight;
(e) if the aeroplane is equipped with two-way radio equipment capable of communicating with an ATSU on the appropriate frequency; and
(f) if leaving the control zone, in accordance with instructions issued by an ATSU prior to departure.