Alaska Stat. § 13.75.050
If a person fails to exercise the person's authority to control disposition under AS 13.75.020 within 48 hours after receiving notification of the decedent's death or within 48 hours after the decedent's death, whichever is earlier, the person may not control the disposition of the decedent's remains, and the right to control the disposition of the decedent's remains passes to the person who is next listed in priority under AS 13.75.020. If the person to whom the right to control the disposition passes under this section fails to exercise the person's authority to control the disposition within 48 hours after being notified that the authority to control the disposition has passed to the person, the authority to control the disposition passes to the person who is next listed in priority under AS 13.75.020.
AS 13.75.050