Effect of Merger (including the Agreement and Plan of Merger made on February 13, 2013, between US Airways Group, Inc., AMR Corporation and AMR Merger Sub, Inc. (the “Merger”)). The provisions of this Letter of Agreement will be binding on any successor of US Airways, including a successor that results from the operational merger of US Airways and American Airlines, and US Airways will require that any such successor agree in writing to be bound by this Letter of Agreement. Moreover, within 30 days after the issuance by the Federal Aviation Administration of a single operating certificate as a result of any such merger, the Parties will meet and discuss increasing the minimum number of positions under paragraph 4c of this Letter of Agreement, taking into account the size of the PSA pilot force relative to the other wholly-owned subsidiaries and PSA’s operating requirements.