14 C.F.R. § 302.503 Contents and service of petition or complaint.
Title 14 - Aeronautics and Space
(a) If a petition or complaint is filed it shall state the reasons why the rates, fares, or charges, or the classification, rule, regulation, or practice complained of are unlawful and shall support such reasons with a full factual analysis. (b) A petition or complaint shall be served by the petitioner or complainant upon the air carrier against whose tariff provision the petition or complaint is filed. (c) Answers to complaints, other than those filed under §302.506, shall be filed within seven (7) working days after the complaint is filed.
Title 14: Aeronautics and Space
PART 302—RULES OF PRACTICE IN PROCEEDINGS
Subpart E—Rules Applicable to Proceedings With Respect to Rates, Fares and Charges for Foreign Air Transportation
§ 302.503 Contents and service of petition or complaint.