(1) Unless otherwise authorised by the Director, no person shall, outside controlled airspace and below flight level 100, fly an aircraft at an indicated air speed of more than 250 knots.
(2) Unless otherwise authorised or required by an ATSU, no person shall fly an aircraft within a control zone or an aerodrome traffic zone at an indicated air speed of more than—
(a) 160 knots, in the case of a reciprocating-engine aircraft; or
(b) 200 knots, in the case of a turbine-powered aircraft:
Provided that if the minimum safe indicated air speed for a particular flight is greater than the maximum indicated air speed prescribed in this regulation, the aircraft may be flown at the minimum safe indicated air speed.