(2) Where a person satisfies the Minister that, for any period of five years before the coming into force of these Regulations, the person would have qualified for a certificate under these Regulations if these Regulations had been in force during that period, the Minister may, on application received prior to January 1, 1991, issue the person the certificate that the person would have qualified for, that is valid, subject to section 36, 61 or 68, for as long as the person is certified medically fit in accordance with paragraph 27(b), 53(b) or 64(b).