47 C.F.R. § 1.301
(a) Interlocutory rulings which are appealable as a matter of right. Rulings listed in this paragraph are appealable as a matter of right. An appeal from such a ruling may not be deferred and raised as an exception to the initial decision.
(b) Other interlocutory rulings. Except as provided in paragraph (a) of this section, appeals from interlocutory rulings shall be filed only if allowed by the presiding officer. Any party desiring to file an appeal shall first file a request for permission to file appeal. The request shall be filed within 5 days after the order is released or (if no written order) after the ruling is made. Pleadings responsive to the request shall be filed only if they are requested by the presiding officer. If the presiding officer made the ruling, the request shall contain a showing that the appeal presents a new or novel question of law or policy and that the ruling is such that error would be likely to require remand should the appeal be deferred and raised as an exception. If a case manager made the ruling, the request shall contain a showing that the appeal presents a question of law or policy that the case manager lacks authority to resolve. The presiding officer shall determine whether the showing is such as to justify an interlocutory appeal and, in accordance with his determination, will either allow or disallow the appeal or modify the ruling. Such ruling is final: Provided, however, That the Commission may, on its own motion, dismiss an appeal allowed under this section on the ground that objection to the ruling should be deferred and raised after the record is certified for decision by the Commission or as an exception to an initial decision.
(c) Procedures, effective date.
(7) Oppositions and replies shall be served and filed in the same manner as appeals and shall be served on appellant if he is not a party to the proceeding. Oppositions shall be filed within 5 days after the appeal is filed. Replies shall not be permitted, unless the Commission specifically requests them. Oppositions shall not exceed 5 double-spaced typewritten pages. Replies shall not exceed 5 double-spaced typewritten pages.
(Secs. 4, 303, 307, 48 Stat., as amended, 1066, 1082, 1083; 47 U.S.C. 154, 303, 307)
[35 FR 17333, Nov. 11, 1970, as amended at 40 FR 39509, Aug. 28, 1975; 41 FR 14874, Apr. 8, 1976; 41 FR 28789, July 13, 1976; 46 FR 58682, Dec. 3, 1981; 55 FR 36641, Sept. 6, 1990; 62 FR 4171, Jan. 29, 1997; 85 FR 63179, Oct. 6, 2020]