8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C.  20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

August 10, 2009

Date of Report (Date of earliest event reported)

AAR CORP.

(Exact Name of Registrant as Specified in Its Charter)

Delaware

(State or other jurisdiction of incorporation)

1-6263	36-2334820
(Commission File Number)	(IRS Employer Identification No.)

One AAR Place, 1100 N. Wood Dale Road

Wood Dale, Illinois 60191

(Address and Zip Code of Principal Executive Offices)

Registrant’s telephone number, including area code:  (630) 227-2000

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:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01 Other Events.

On August 10, 2009, AAR CORP. issued a press release announcing that it had received a favorable ruling from the Wexford County Circuit Court in a case brought by the Michigan Department of Environmental Quality.  The Court’s ruling fully exonerated AAR Manufacturing, Inc., a subsidiary of AAR, holding that it was not responsible in any respect for the alleged release of environmental contamination at and in the vicinity of its Cadillac, Michigan facility.

A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

Item 9.01		Exhibits.
	(d)	Exhibits
	99.1	Press Release dated August 10, 2009.

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SIGNATURE

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.

Date:       August 11, 2009

AAR CORP.
By:	/s/ ROBERT J. REGAN
Robert J. Regan
Vice President, General Counsel and Secretary

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EXHIBIT INDEX

Exhibit Number	Description
99.1	Press Release issued by AAR CORP. dated August 10, 2009.

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EX-99.1

Exhibit 99.1

NEWS
For immediate release

Contact:	Chris Mason
	Director, Corporate Communications
	(630) 227-2062, chris.mason@aarcorp.com

AAR ANNOUNCES FAVORABLE RULING IN MICHIGAN ENVIRONMENTAL CASE

WOOD DALE, ILLINOIS, August 10, 2009 — AAR CORP. (NYSE: AIR) announced today that the Wexford County Circuit Court issued a decision on August 7, 2009 fully exonerating AAR Manufacturing, Inc., a subsidiary of AAR CORP., in a case brought by the Michigan Department of Environmental Quality (MDEQ).  The Court found that AAR Manufacturing was not responsible in any respect for the alleged release of environmental contamination at and in the vicinity of its Cadillac, Michigan facility.

The Court’s decision, following a 12-day trial that ended in February 2009, upheld the Company’s position by holding that the evidence did not establish that there was a release of contaminants at or near the Cadillac facility since the date of the 1985 consent decree that was previously agreed to by the parties.  The Court further held that there was no relevant evidence suggesting that the Company was not in full compliance with the 1985 consent decree.  AAR stated that it intends to seek from the MDEQ the reimbursement of the Company’s costs and expenses incurred in this litigation.

The decision is consistent with the Company’s long-standing commitment to assuring that each of its businesses operates in an environmentally and socially responsible manner and in compliance with governing rules and regulations.

AAR is a leading provider of products and value-added services to the worldwide aviation/aerospace industry. With facilities and sales locations around the world, AAR uses its close-to-the-customer business model to serve airline and defense customers through four operating segments: Aviation Supply Chain; Maintenance, Repair and Overhaul; Structures and Systems; and Aircraft Sales and Leasing. More information can be found at www.aarcorp.com.

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This press release contains certain statements relating to future results, which are forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995.  These forward-looking statements are based on beliefs of Company management, as well as assumptions and estimates based on information currently available to the Company, and are subject to certain risks and uncertainties that could cause actual results to differ materially from historical results or those anticipated, including those factors discussed under Item 1A, entitled “Risk Factors”, included in the Company’s May 31, 2009 Form 10-K. Should one or more of these risks or uncertainties materialize adversely, or should underlying assumptions or estimates prove incorrect, actual results may vary materially from those described.  These events and uncertainties are difficult or impossible to predict accurately and many are beyond the Company’s control.  The Company assumes no obligation to update any forward-looking statements to reflect events or circumstances after the date of such statements or to reflect the occurrence of anticipated or unanticipated events. For additional information, see the comments included in AAR’s filings with the Securities and Exchange Commission.