The purpose of this notice is to provide guidance regarding the lawful role of air charter brokers (i.e., entities, including persons, that link prospective charter customers with direct air carriers) in the provision of air transportation.1 This guidance will be used by the Office of the Assistant General Counsel for Aviation Enforcement and Proceedings (Enforcement Office) in its compliance and enforcement activities associated with 49 U.S.C. §§ 41101 and 41301, which establish the certificate and permit requirements for U.S. and foreign air carriers, respectively, and 49 U.S.C. § 41712, which prohibits unfair and deceptive practices.