Section 821.57 - Procedure on appeal(a)Time within which to file notice of appeal. A party may appeal from a law judge's initial decision or appealable order by filing with the Board, and simultaneously serving on the other parties, a notice of appeal, within 2 days after the date on which the initial decision was orally rendered or the appealable order was served. The time limitations for the filing of documents respecting appeals governed by this subpart will not be extended by reason of the unavailability of the hearing transcript.(b)Briefs and oral argument. Each appeal in proceedings governed by this subpart must be perfected, within 5 days after the date on which the notice of appeal was filed, by the filing, and simultaneous service on the other parties, of a brief in support of the appeal. Any other party to the proceeding may file a brief in reply to the appeal brief within 7 days after the date on which the appeal brief was served on that party. A copy of the reply brief shall simultaneously be served on the appealing party and any other parties to the proceeding. Aside from the time limits specifically mandated by this paragraph, the provisions of §§ 821.7(a)(3) and 821.48 shall apply.(c)Issues on appeal. The provisions of § 821.49(a) and (b) shall apply in proceedings governed by this subpart.(d)Petition for rehearing, reargument, reconsideration or modification of order. The only petitions for rehearing, reargument, reconsideration or modification of an order which the Board will entertain in proceedings governed by this subpart are those based on the ground that new matter has been discovered. Such petitions must:(1) Set forth the new matter;(2) Contain affidavits of prospective witnesses, authenticated documents, or both, or an explanation of why such substantiation is unavailable; and(3) Contain a statement explaining why such new matter could not have been discovered in the exercise of due diligence prior to the date on which the evidentiary record closed. 68 FR 22625 , Apr. 29, 2003, as amended at 77 FR 63253 , Oct. 16, 2012