Except as provided in § 137.261 for immediate reassumption, prior to a reassumption becoming effective, the Secretary must:
(a) Notify the Self-Governance Tribe in writing by certified mail of the details of findings required under § 137.256(a)(1) and (2);
(b) Request specified corrective action within a reasonable period of time, which in no case may be less than 45 days;
(c) Offer and provide, if requested, the necessary technical assistance and advice to assist the Self-Governance Tribe to overcome the conditions that led to the findings described under (a); and
(d) Provide the Self-Governance Tribe with a hearing on the record as provided under Subpart P of this part.