178Holder may request revocation

178  Holder may request revocation  (1) The holder of an approved arrangement (including an approved arrangement that is suspended, or a part of which is suspended, under Part 5) may request the Secretary to revoke the approved arrangement. Note: If the holder does not wish to revoke the approved arrangement for all purposes, the holder may apply to vary the approved arrangement under Subdivision B of Division 1 of Part 4.  (3) If the Secretary receives a request under subsection (1) to revoke an approved arrangement, the Secretary must, by written notice to the holder of the approved arrangement, revoke the approved arrangement with effect on the day specified in the notice.  (a) had given the holder of the approved arrangement a notice under subsection 179(2) in relation to the approved arrangement; and  (b) had not decided whether to revoke the approved arrangement or not.