(A) All fees imposed under this subchapter shall be payable in advance, except that:
(1) All fees based upon the gross value or volume of sales or gross revenue, directly or in the alternative, shall be payable on or before the tenth day of the month next succeeding the month to which the fees are applicable.
(2) All landing fees for nonscheduled air carriers that are based upon the gross weight of the aircraft shall be payable on the day the landing occurs.
(B) The amount of fees imposed by this division and not paid on or before the same become due and payable shall bear interest from the due date until paid at the rate of 10% per annum.
('68 Code, § 3-55) (Ord. passed 1-12-60)