“specified date”, in relation to a qualifying payment by an approved aircraft leasing company or approved partnership, means the latest of the following dates:
(b) the date on which the company or partnership is approved as an approved aircraft leasing company or approved partnership;
(c) either of the following dates, whichever is applicable:
(i) in a case where the declaration referred to in sub‑paragraph (3) is made on or before the 15th day of the month immediately following the date on which the qualifying payment is liable to be made, the date on which the qualifying payment is liable to be made;
(ii) in any other case, the date on which the declaration referred to in sub‑paragraph (3) is made.