In American Air Lines, Inc., v. North American Air Lines, Inc., 351 U.S. 79, 76 S.Ct. 600, 603 (1956), decided at the last term, the Supreme Court was dealing with 411 of the Civil Aeronautics Act, 49 U.S.C.A. 491, which, like the Federal Trade Commission Act, prohibits 'unfair or deceptive commercial practices and unfair methods of competition.' The court cited and applied its own rules as developed in the Federal Trade Commission decisions. It said, 351 U.S. at page 85, 76 S.Ct. at page 605: 'Under 411 it is the Board that speaks in the public interest. We do not sit to determine independently what is the public interest in matters of this kind, committed as they are to the judgment of the Board. We decide only whether, in determining what is the public interest, the Board has stayed within its jurisdiction and applied criteria appropriate to that determination.'