-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 iH9yHL7uajfXPH9IArRT7A==

<SEC-DOCUMENT>0000001750-04-000012.txt : 20040108
<SEC-HEADER>0000001750-04-000012.hdr.sgml : 20040108
<ACCEPTANCE-DATETIME>20040108163427
ACCESSION NUMBER:		0000001750-04-000012
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031224
FILED AS OF DATE:		20040108

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AAR CORP
		CENTRAL INDEX KEY:			0000001750
		STANDARD INDUSTRIAL CLASSIFICATION:	AIRCRAFT & PARTS [3720]
		IRS NUMBER:				362334820
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0531

	BUSINESS ADDRESS:	
		STREET 1:		1100 N WOOD DALE RD
		CITY:			WOOD DALE
		STATE:			IL
		ZIP:			60191
		BUSINESS PHONE:		6302272000

	MAIL ADDRESS:	
		STREET 1:		1100 N WOOD DALE RD
		CITY:			WOOD DALE
		STATE:			IL
		ZIP:			60191

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALLEN AIRCRAFT RADIO INC
		DATE OF NAME CHANGE:	19700204

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			STORCH DAVID P
		CENTRAL INDEX KEY:			0001027741
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0531

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-06263
		FILM NUMBER:		04515783

	BUSINESS ADDRESS:	
		STREET 1:		C/O AAR CORP
		STREET 2:		1111 NICHOLAS BLVD
		CITY:			ELK GROVE VILLAGE
		STATE:			IL
		ZIP:			60007
		BUSINESS PHONE:		8474393939

	MAIL ADDRESS:	
		STREET 1:		C/O AAR CORP
		STREET 2:		1111 NICHOLAS BLVD
		CITY:			1111 NICHOLAS BLVD
		STATE:			IL
		ZIP:			60007
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
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        <issuerTradingSymbol>AIR</issuerTradingSymbol>
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            <rptOwnerStreet2>1111 NICHOLAS BLVD</rptOwnerStreet2>
            <rptOwnerCity>1111 NICHOLAS BLVD</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60007</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
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            <officerTitle>President &amp; CEO</officerTitle>
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    </reportingOwner>

    <nonDerivativeTable>

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                </underlyingSecurityShares>
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                <value></value>
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                <transactionShares>
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                </transactionShares>
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                    <value>8.59</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <value>2009-07-09</value>
                <footnoteId id="F1"/>
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                <value>2012-07-09</value>
            </expirationDate>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                    <value>56000</value>
                </underlyingSecurityShares>
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    </derivativeTable>

    <footnotes>
        <footnote id="F1">Vesting was accelerated due to AAR CORP. stock reaching the rolling 20-day average of NYSE closing price.</footnote>
    </footnotes>


    <ownerSignature>
        <signatureName>by Jo-Ellen Kiddie, Power of Attorney</signatureName>
        <signatureDate>2004-01-08</signatureDate>
    </ownerSignature>

</ownershipDocument>

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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----