67. The issue, suspension and revocation of a licence, rating, certificates of competency or permit

Every licence, rating, certificate of competency, and permit referred to in section 66, shall be issued by the

Director General or on his behalf by any other person specifically authorized in writing by him and the Director

General or such other person acting on his behalf shall have the power to amend, suspend or revoke any such licence, rating, certificate of competency or permit issued, as the case may be, for any reason as may be prescribed under that section.