11After section 33 insert—
(1)The Commissioners may under this section keep a register of aircraft operators.
(2)If the Commissioners decide to keep a register under this section, the operator of a chargeable aircraft becomes liable to be registered under this section if the aircraft is used for the carriage of chargeable passengers to which section 30A above applies.
(3)A person who has become liable to be registered under this section ceases to be so liable if the Commissioners are satisfied at any time—
(a)that he no longer operates any chargeable aircraft, or
(b)that no chargeable aircraft which he operates will be used for the carriage of chargeable passengers to which section 30A above applies.
(4)A person who is not registered under this section and has not given notice under this subsection shall, if he becomes liable to be registered under this section at any time, give written notice of that fact to the Commissioners not later than the end of the prescribed period beginning with that time.
(5)Notice under subsection (4) above shall be in such form, be given in such manner and contain such information as the Commissioners may direct.”