(a) Any person may file a motion requesting reconsideration of a final order by the Commission.

(b) The motion shall be filed within 15 days of the issuance of the final order that is the subject of the motion and must:

(1) Briefly and specifically allege material errors of fact or law and the relief sought; and

(2) Be confined to new questions raised by the determination or action ordered and upon which the moving party had no prior opportunity to submit arguments.

(c) Upon filing a motion for reconsideration, the underlying Commission order is not deemed to be final for purposes of 39 U.S.C. 3663 until final disposition of the motion.