UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D. C. 20549

FORM 8-K/A

(Amendment No. 1)

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of earliest event reported: February 13, 2013

AMR CORPORATION

(Exact name of registrant as specified in its charter)

(817) 963-1234 

(Registrant’s telephone number)

(Former name or former address, if changed since last report.)

American Airlines, Inc.

(Exact name of registrant as specified in its charter)

(817) 963-1234 

(Registrant’s telephone number)

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Explanatory Note: As previously disclosed in the Current Report on Form 8-K filed on February 14, 2013, AMR Corporation, together with AMR Merger Sub, Inc. and US Airways Group, Inc., entered into an Agreement and Plan of Merger on February 13, 2013. This Form 8-K/A amends the Current Report on Form 8-K referred to above to include Exhibit 2.1, which was omitted from the Current Report on Form 8-K referred to above, and to provide the disclosure below required by Item 5.02.

As previously announced, on February 13, 2013, AMR Corporation, a Delaware corporation (“AMR” or the “Company”), US Airways Group, Inc., a Delaware corporation, and AMR Merger Sub, Inc., a Delaware corporation and wholly owned subsidiary of AMR (“Merger Sub”), entered into an Agreement and Plan of Merger (the “Merger Agreement”) providing for a business combination of AMR and US Airways (the “Merger”).

In connection with the entry into the Merger Agreement, the Company and Thomas W. Horton, chairman, chief executive officer and president of AMR and American Airlines, Inc., a wholly-owned subsidiary of AMR (“AA” and, together with AMR, “American”), entered into a letter agreement, dated as of February 13, 2013, governing Mr. Horton’s continued service to American (the “Letter Agreement”). Pursuant to the Letter Agreement, Mr. Horton’s employment with American will end effective upon the closing of the Merger described above and, thereafter, Mr. Horton will serve as Chairman of AMR as the surviving entity in the Merger (“New American”) until the earlier of (A) one year after the closing of the Merger and (B) the day immediately prior to the first annual meeting of stockholders of New American (which shall in no event occur prior to May 1, 2014).

Effective upon the closing of the Merger, Mr. Horton will receive a severance payment equal to $9,937,500 in cash and $ 9,937,500 in shares of New American Common Stock. In addition, Mr. Horton will continue to receive lifetime flight and other travel benefits commensurate with those to which he is currently entitled, an office and office support for a period of two years after the closing of the Merger. In determining the form and amount of compensation, the AMR Board of Directors agreed that the amount to be paid is reasonable and appropriate given, among other things, Mr. Horton’s long service to the company, the success of the restructuring, and the value created for the company’s financial stakeholders.

The Letter Agreement is attached hereto as Exhibit 10.2 and incorporated herein by reference.

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, proxy statement and prospectus. 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.

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 and US Airways will be submitted to the stockholders of US Airways for their consideration. AMR expects to file with the SEC a registration statement on Form S-4 that will include a prospectus of AMR and a proxy statement of US Airways, and US Airways expects to file with the SEC a definitive proxy statement on Schedule 14A. 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 PROXY STATEMENT, PROSPECTUS AND OTHER RELEVANT DOCUMENTS THAT WILL BE FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Investors and security holders will be able to obtain free copies of the proxy statement, prospectus and other documents containing important information about AMR and US Airways, 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 proxy statement for its 2012 annual meeting of stockholders, which was filed with the SEC on April 27, 2012. Information about the directors and executive officers of AMR is set forth in its Annual Report on Form 10-K for the fiscal year ended December 31, 2011, which was filed with the SEC on February 15, 2012. These documents can be obtained free of charge from the sources indicated above. Other information regarding the participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, will be contained in the prospectus and proxy statement and other relevant materials when and if filed with the SEC in connection with the proposed transaction.

* Filed herewith

**Previously filed

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: February 14, 2013

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: February 14, 2013

EXHIBIT INDEX

* Filed herewith

**Previously filed