14 C.F.R. § 257.4 Unfair and deceptive practice.
Title 14 - Aeronautics and Space
The holding out or sale of scheduled passenger air transportation involving a code-sharing arrangement or long-term wet lease is prohibited as unfair and deceptive in violation of 49 U.S.C. 41712 unless, in conjunction with such holding out or sale, carriers and ticket agents follow the requirements of this part.
Title 14: Aeronautics and Space
PART 257—DISCLOSURE OF CODE-SHARING ARRANGEMENTS AND LONG-TERM WET LEASES
§ 257.4 Unfair and deceptive practice.