29. Where on the application of a trade union or employers' association the Certification Officer is satisfied—N.I.
(a)that a members' superannuation scheme maintained by it, as it had effect at a date not more than two years before the appointed day, has been examined by an actuary;
(b)that the qualifications of the actuary were adequate for the purpose of carrying out the examination; and
(c)that the examination, and the report made by the actuary on its results, fulfil the requirements of paragraphs 24 and 25,
the Certification Officer may direct that paragraph 23 shall have effect, in relation to that scheme, as if for the reference to two years from the appointed day there were substituted a reference to five years from the date by reference to which that examination was carried out.