VFR flight plan and air traffic control clearance in Class B, Class C or Class D airspace
29.—(1) Subject to rule 31, before an aircraft flies within Class B, Class C or Class D airspace during the notified hours of watch of the appropriate air traffic control unit, the commander of the aircraft shall—
(a)cause to be communicated to the appropriate air traffic control unit a flight plan which complies with paragraphs (2) and (3) (as appropriate); and
(b)obtain an air traffic control clearance to fly within that airspace.
(2) The flight plan shall contain such particulars of the flight as may be necessary to enable the air traffic control unit to issue an air traffic control clearance and for search and rescue purposes.
(3) The flight plan required for a flight within United Kingdom reduced vertical separation minimum airspace shall also state whether or not the aircraft is equipped with height keeping systems, as required by articles 57 or 58 of the Order.
(4) The commander of an aircraft shall not cause a flight plan to be communicated to the appropriate air traffic control unit for VFR flight in Class C airspace above FL195 or along a Class C ATS route at any level unless authorised to do so by the CAA.