12.—(1) The fees specified in paragraphs 1, 10 and 11 of this Schedule shall be payable to the Secretary of State; and fees specified in paragraphs 2 to 9 shall be payable to the CAA.
(2) The fees specified in these Regulations shall be payable upon application being made for the certificate, other document or approval, as the case may be: Provided that where the amount of the fee depends on the actual costs incurred by the CAA —
(i)they may require that the application shall be accompanied by payment of an amount up to 5 per cent. of the maximum of such fee;
(ii)the fee in respect of the investigations made during any month shall be payable at the end of that month, and any amount paid on application shall be deducted from the fee payable at the end of the final month of investigations.