Supplemental requirements9.
(1)
Without limiting the duties set out in regulations 7 and 8, an applicant for or the holder of a licence must provide to the CAA, if the CAA from time to time so requires of that person—
(a)
an undertaking to pay contributions in accordance with the duty set out in regulation 7 or regulation 8; and
(b)
if the CAA has reason to believe that that person may not discharge any such duty, in whole or in part, security for the duty to pay the whole or any part of such contributions (which may include a payment in advance);
in each case, in such form and on such terms (or, in the case of a payment in advance, of such amount) as the CAA may determine to be appropriate.
(2)
A person who is required to provide an undertaking or security pursuant to paragraph (1) must comply with the terms of that undertaking or security.