Careflite v. Office & Professional Employees International Union

DENNIS, Circuit Judge:

This case involves the scope of a grievance procedure set forth in a collective bargaining agreement between an airline and its pilots’ union under the Railway Labor Act (“RLA”), 45 U.S.C. § 151 et seq. “The RLA, which was extended in 1936 to cover the airline industry, see Act of Apr. 10, 1936, ch. 166, 49 Stat. 1189; 45 U.S.C. §§ 181-188, sets up a mandatory arbitral *316mechanism to handle disputes ‘growing out of grievances or out of the interpretation or application of agreements concerning rates of pay, rules, or working conditions.’ ” Hawaiian Airlines, Inc. v.…