CFR›Title 14›Chapter II›Part 257 ContainsSections 257.1–257.6CorpusDaily eCFRDisplayed edition2026-05-07Last updated2026-05-07 PART 257—DISCLOSURE OF CODE-SHARING ARRANGEMENTS AND LONG-TERM WET LEASES Sections 257.1 § 257.1 Purpose. 257.2 § 257.2 Applicability. 257.3 § 257.3 Definitions. 257.4 § 257.4 Unfair and deceptive practice. 257.5 § 257.5 Notice requirement. 257.6 § 257.6 Effective and compliance dates. Authority49 U.S.C. 40113(a) and 41712.Source64 FR 12851, Mar. 15, 1999, unless otherwise noted. Previous 256 Part 256—Electronic Airline Information Systems Next 258 Part 258—Disclosure of Change-of-Gauge Services