29 C.F.R. § 4003.52
When to file.
eCFR amendment effective 2020-02-24 · in effect Feb 24, 2020 to Mar 25, 2020 · last amended by 75 FR 68205, Nov. 5, 2010
Link to an amendment published at 85 FR 10284, Feb. 24, 2020.
Except as provided in
§§ 4003.4 and 4003.5, an appeal under this subpart must be filed within 45 days after the date of the initial determination being appealed or, when administrative review includes a procedure in part 4903 of this chapter, by the date that is specified in the PBGC's notice of the right to request review.