Except while pending in a U.S. court of appeals on a petition for review (after the transcript of the record has been filed) or in the U.S. Supreme Court, a proceeding may be reopened by the Commission at any time in accordance with Sec. 3.72. Any person subject to a Commission decision containing a rule or order which has become effective, or an order to cease and desist which has become final may file a request to reopen the proceeding in accordance with Sec. 2.51. [44 FR 40637, July 12, 1979]