That collective bargaining agreement was subsequently ratified by the US Airways pilots overwhelmingly. In that agreement, the parties agreed that once the merger closes, with limited exceptions, the pilots at US Airways would immediately transition, without any further ratification vote, to the terms established in the new six-year American Airlines/APA collective bargaining agreement, which was approved by the bankruptcy court on December 19, 2012, as modified by the MOU. The parties recognized that they would still need to harmonize practices currently applicable to the two pilot groups, and accordingly, they agreed to an expedited process for compiling a new, final “joint” collective bargaining agreement (“JCBA&rdquo😉, but also agreed that the economic and most critical aspects of the modified six year American/APA agreement would remain in effect throughout.2 Because the JCBA will only implement, rather than alter, the economics of the MOU and would only make other limited changes contemplated by the MOU, the JCBA reached through arbitration will not be subject to membership ratification.