49 CFR 386.67: Judicial review.

(a) Any party to the underlying proceeding, who, after an administrative adjudication, is adversely affected by a Final Agency Order issued under 49 U.S.C. 521 may, within 30 days of service of the Final Agency Order, petition for review of the order in the United States Court of Appeals in the circuit where the violation is alleged to have occurred, or where the violator has its principal place of business or residence, or in the United States Court of Appeals for the District of Columbia Circuit.

(b) Judicial review will be based on a determination of whether the findings and conclusions in the Final Agency Order were supported by substantial evidence or were otherwise not in accordance with law. No objection that has not been raised before the Agency will be considered by the court, unless reasonable grounds existed for failure or neglect to do so. The commencement of proceedings under this section will not, unless ordered by the court, operate as a stay of the Final Agency Order of the Agency.