14 C.F.R. § 61.131
(b) A person who receives flight training in and resides in the State of Alaska but does not meet the night flight training requirements of this section:
(2) Must comply with the appropriate night flight training requirements of this subpart within the 12-calendar-month period after the issuance of the pilot certificate. At the end of that period, the certificate will become invalid for use until the person complies with the appropriate night flight training requirements of this subpart. The person may have the “night flying prohibited” limitation removed if the person—
[Docket 25910, 62 FR 16298, Apr. 4, 1997; Amdt. 61-103, 62 FR 40905, July 30, 1997]