‘Additional conditions to be satisfied for the grant of a licence 13.—(1) To the conditions as to which the Registrar is required to be satisfied for the grant of a licence under section 129 of the Act, there are added the following conditions which shall have effect subject to paragraph (3) below and to regulation 3(6). (2) The additional conditions are— … (d) that he has not failed the instructional ability and fitness test more than twice since he passed the written examination;’