173Notice of suspension

173  Notice of suspension  (1) If the Secretary decides to suspend an approved arrangement, or a part of an approved arrangement, under this Division, the Secretary must give the holder of the approved arrangement a written notice stating the following:  (a) that the approved arrangement, or the part of the approved arrangement, is to be suspended;  (2) If the holder of the approved arrangement was given a notice (a show cause notice) under subsection 171(2) that included the request referred to in paragraph 171(3)(c), the suspension must not start before the earlier of the following: