Section 47.30.770 - Additional 180-day commitment(a) The respondent shall be released from involuntary treatment at the expiration of 90 days unless the professional person in charge files a petition for a 180-day commitment conforming to the requirements of AS 47.30.740(a) except that all references to "30-day commitment" shall be read as "the previous 90-day commitment" and all references to "90-day commitment" shall be read as "180-day commitment".(b) The procedures for service of the petition, notification of rights, and judicial hearing shall be as set out in AS 47.30.740 - 47.30.750. If the court or jury finds by clear and convincing evidence that the grounds for 90-day commitment as set out in AS 47.30.755 are present, the court may order the respondent committed for an additional treatment period not to exceed 180 days from the date on which the first 90-day treatment period would have expired.(c) Successive 180-day commitments are permissible on the same ground and under the same procedures as the original 180-day commitment. An order of commitment may not exceed 180 days.(d) Findings of fact relating to the respondent's behavior made at a 30-day commitment hearing under AS 47.30.735, a 90-day commitment hearing under AS 47.30.750, or a previous 180-day commitment hearing under this section shall be admitted as evidence and may not be rebutted except that newly discovered evidence may be used for the purpose of rebutting the findings.