14 CFR 302.609 : Aeronautics And Space (§ 1.1 To Parts 1311-1399) — (§ 200.1 To Parts 461-1199) — Office Of The Secretary, Department Of Transportation (Aviation Proceedings) (§ 200.1 To § 399.120) — Procedural Regulations (§ 300.0 To Part 331) — Rules Of Practice In Proceedings (§ 302.1 To Appendix A To Part 302) — Rules Applicable To Proceedings Concerning Airport Fees (§ 302.601 To § 302.610) — Completion of proceedings.

(a) When a complaint or a request for determination with respect to an airport fee or fees has been filed under this subpart and has not been dismissed, the Secretary will issue a determination as to whether the fee is reasonable within 120 days after the complaint or request is filed.

(b) When both a complaint and a request for determination have been filed with respect to the same airport fee or fees and have not been dismissed, the Secretary will issue a determination as to whether the fee is reasonable within 120 days after the complaint is filed.