UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported): August 1, 2013

AMR CORPORATION

(Exact name of registrant as specified in its charter)

(817) 963-1234

(Registrant’s telephone number)

N/A

(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)

N/A

(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:

On August 1, 2013, AMR Corporation (“AMR”), the parent company of American Airlines, Inc. (“American”), issued a press release announcing that preliminary results indicated strong creditor support for the plan of reorganization under Chapter 11 of the Bankruptcy Code (the “Plan”) of AMR, American and their related debtor entities. Of the eight classes that voted, more than 88 percent of the ballots received and tabulated representing more than 97 percent of the claims value voting in each class voted in favor of the Plan. Additionally, more than 99 percent of the shares tabulated for the class of AMR stockholders voted to accept the Plan.

On June 7, 2013, the U.S. Bankruptcy Court for the Southern District of New York (the “Court”) authorized the debtors to begin soliciting approval of the Plan from AMR’s creditors and stockholders. Voting on the Plan ended on July 29, 2013 at 5:00 p.m. EDT. The final voting results for the Plan will be certified and filed with the Court in advance of the confirmation hearing on August 15, 2013.

The effective date of the Plan and AMR’s Chapter 11 emergence are expected to occur simultaneously with the closing of the proposed merger with US Airways, which is expected to occur in the third quarter of 2013.

The Plan can be accessed online at www.amrcaseinfo.com. Neither the Plan nor any of the other information contained on the website identified in the preceding sentence is incorporated by reference in this current report on Form 8-K. A copy of the press release is furnished herewith as Exhibit 99.1 and incorporated herein by this reference. This current report (including the exhibit hereto or any information included therein) shall not be deemed an admission as to the materiality of any information required to be disclosed solely by reason of Regulation FD.

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. AMR Corporation (“AMR”) has filed with the Securities and Exchange Commission (“SEC”) a registration statement on Form S-4, which includes a proxy statement of US Airways Group, Inc. (“US Airways”) that also constitutes a prospectus of AMR, and US Airways has filed with the SEC its definitive proxy statement on Schedule 14A. AMR and US Airways have mailed the proxy statement/prospectus to US Airways security holders. INVESTORS AND SECURITY HOLDERS OF US AIRWAYS ARE URGED TO READ THE PROXY STATEMENT/PROSPECTUS AND OTHER RELEVANT DOCUMENTS FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY BECAUSE THEY CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Investors and security holders may obtain free copies of the proxy statement/prospectus and other documents containing important information about AMR and US Airways through the website maintained by the SEC at http://www.sec.gov. Copies of the documents filed with the SEC by US Airways 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 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.

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: the challenges and costs of the proposed transaction, including integrating operations and achieving anticipated synergies; the price of, market for and potential market price volatility of common stock of the

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ultimate parent entity following the closing of the proposed transaction; significant liquidity requirements and substantial levels of indebtedness of the combined company following the closing; potential limitations on the use of certain tax attributes following the closing; failure of the proposed transaction to be completed; and other economic, business, competitive, and/or regulatory factors affecting the business of the combined company after the closing and 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.

The following exhibit is attached hereto and furnished herewith.

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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.

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.

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Exhibit Index