425

Filed by AMR Corporation

Commission File No. 1-8400

Pursuant to Rule 425 Under the Securities Act of 1933

And Deemed Filed Pursuant to Rule 14a-12

Under the Securities Exchange Act of 1934

Subject Company: US Airways Group, Inc.

Commission File No. 001-8444

TWU and IAM Reach Seniority Integration Agreement

April 29, 2013

Reactive Media Statement

We are pleased the Transport Workers Union (TWU) and the International Association of Machinists and Aerospace Workers (IAM) have reached a negotiated agreement that outlines how the unions will manage the seniority integration process for their mutual workgroups. This agreement was reached ahead of the deadline included in the TWU’s Memorandum of Understanding, and represents significant progress as we continue to move toward closing our merger with US Airways.

Additional Talking Points

 

  •  

We are pleased the TWU and IAM have reached an agreement about the seniority integration process for the Mechanic & Related employees, Material Logistics Specialists, Maintenance Control Technicians, and Fleet Service Clerks.

 

  •  

Reaching an agreement this quickly, and outside of arbitration is a significant accomplishment and not very common in a typical airline merger.

 

  •  

For these workgroups, seniority will be determined by a person’s date of entry into their basic classification, as set forth in the existing collective bargaining agreements and the current seniority lists as maintained by AA and US Airways for each such group.

 

  •  

If two people have the same date of entry, the seniority integration will be determined by their dates of hire, and then, if necessary, by the last four digits of their social security number (the person with the lower social security number will be assigned a lower seniority number, thus having higher seniority).

 

  •  

The agreement was reached far in advance of the deadline outlined in the TWU’s MOU (120 days from the Plan or Reorganization being submitted).

 

  •  

The AFL-CIO sent a letter to the TWU and IAM presidents urging them to consider sharing representation rights if the merger is closed. This approach would be similar to the CWA and IBT partnership at US Airways, the Airline Customer Service Employee Association (ACSEA).

 

  •  

American’s other TWU-represented workgroups (the Ground School & Simulator Pilot Instructors, Simulator Technicians and Dispatchers) are represented by the TWU at US Airways as well, so the TWU will manage the seniority integration process for those workgroups internally.

Additional Information and Where To Find It

This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. The proposed merger transaction between AMR Corporation (“AMR”) and US Airways Group, Inc. (“US Airways”) will be submitted to the stockholders of US Airways for their consideration. AMR has filed with the Securities and Exchange Commission (“SEC”) a registration statement on Form S-4, which includes a preliminary proxy statement of US Airways that also constitutes a prospectus of AMR. US Airways expects to file with the SEC a definitive proxy statement on Schedule 14A, and AMR and US Airways also plan to file other documents with the SEC regarding the proposed transaction. INVESTORS AND SECURITY HOLDERS OF US AIRWAYS ARE URGED TO READ THE PRELIMINARY PROXY STATEMENT/PROSPECTUS AND OTHER RELEVANT DOCUMENTS THAT WILL BE FILED WITH THE SEC (INCLUDING THE DEFINITIVE PROXY STATEMENT/PROSPECTUS) CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Investors and security holders may obtain free copies of the preliminary proxy statement/prospectus and other documents containing important information about AMR and US Airways (including the definitive proxy statement/prospectus), once such documents are filed with the SEC, through the website maintained by the SEC at http://www.sec.gov. Copies of the documents filed with the SEC by US Airways, when and if available, can be obtained free of charge on

US Airways’ website at www.usairways.com or by directing a written request to US Airways Group, Inc., 111 West Rio Salado Parkway, Tempe, Arizona 85281, Attention: Vice President, Legal Affairs. Copies of the documents filed with the SEC by AMR, when and if available, can be obtained free of charge on AMR’s website at www.aa.com or by directing a written request to AMR Corporation, P.O. Box 619616, MD 5675, Dallas/Fort Worth International Airport, Texas 75261-9616, Attention: Investor Relations or by emailing investor.relations@aa.com.

US Airways, AMR and certain of their respective directors, executive officers and certain members of management may be deemed to be participants in the solicitation of proxies from the stockholders of US Airways in connection with the proposed transaction. Information about the directors and executive officers of US Airways is set forth in its Annual Report on Form 10-K/A, which was filed with the SEC on April 16, 2013, and the preliminary proxy statement/prospectus related to the proposed transaction, which was filed with the SEC on April 15, 2013. Information about the directors and executive officers of AMR is set forth in its Annual Report on Form 10-K/A, which was filed with the SEC on April 16, 2013, and the preliminary proxy statement/prospectus related to the proposed transaction, which was filed with the SEC on April 15, 2013. These documents can be obtained free of charge from the sources indicated above. Other information regarding the participants in the proxy solicitation may also be included in the definitive proxy statement/prospectus and other relevant materials when and if filed with the SEC in connection with the proposed transaction.

Cautionary Statement Regarding Forward-Looking Statements

This document includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements may be identified by words such as “may,” “will,” “expect,” “intend,” “anticipate,” “believe,” “estimate,” “plan,” “project,” “could,” “should,” “would,” “continue,” “seek,” “target,” “guidance,” “outlook,” “forecast” and other similar words. These forward-looking statements are based on AMR’s and US Airways’ current objectives, beliefs and expectations, and they are subject to significant risks and uncertainties that may cause actual results and financial position and timing of certain events to differ materially from the information in the forward-looking statements. The following factors, among others, could cause actual results and financial position and timing of certain events to differ materially from those described in the forward-looking statements: failure of a proposed transaction to be implemented; the challenges and costs of closing, integrating, restructuring and achieving anticipated synergies; the ability to retain key employees; and other economic, business, competitive, and/or regulatory factors affecting the businesses of US Airways and AMR generally, including those set forth in the filings of US Airways and AMR with the SEC, especially in the “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” sections of their respective annual reports on Form 10-K and quarterly reports on Form 10-Q, their current reports on Form 8-K and other SEC filings, including the registration statement and the proxy statement/prospectus related to the proposed transaction. Any forward-looking statements speak only as of the date hereof or as of the dates indicated in the statements. Neither AMR nor US Airways assumes any obligation to publicly update or supplement any forward-looking statement to reflect actual results, changes in assumptions or changes in other factors affecting these forward-looking statements except as required by law.