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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 l2H7ZF7x1vnJoz1QKwOaKw==

<SEC-DOCUMENT>0001181431-03-014575.txt : 20030721
<SEC-HEADER>0001181431-03-014575.hdr.sgml : 20030721
<ACCEPTANCE-DATETIME>20030718200053
ACCESSION NUMBER:		0001181431-03-014575
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030717
FILED AS OF DATE:		20030721

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DUCOMMUN INC /DE/
		CENTRAL INDEX KEY:			0000030305
		STANDARD INDUSTRIAL CLASSIFICATION:	AIRCRAFT PART & AUXILIARY EQUIPMENT, NEC [3728]
		IRS NUMBER:				950693330
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		111 WEST OCEAN BOULEVARD
		STREET 2:		SUITE 900
		CITY:			LONG BEACH
		STATE:			CA
		ZIP:			90802
		BUSINESS PHONE:		5626240800

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HEISER JAMES S
		CENTRAL INDEX KEY:			0001204107

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08174
		FILM NUMBER:		03793726

	BUSINESS ADDRESS:	
		STREET 1:		C/O DUCOMMUN INC
		STREET 2:		P O BOX 22677
		CITY:			LONG BEACH
		STATE:			CA
		ZIP:			90801-5677
		BUSINESS PHONE:		5629511751
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd13300.xml
<DESCRIPTION>COMMON STOCK
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0101</schemaVersion>

    <documentType>4</documentType>
<periodOfReport>2003-07-17</periodOfReport>
<notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000030305</issuerCik>
        <issuerName>DUCOMMUN INC /DE/</issuerName>
        <issuerTradingSymbol>DCO</issuerTradingSymbol></issuer>
<reportingOwner>
<reportingOwnerId>
            <rptOwnerCik>0001204107</rptOwnerCik>
            <rptOwnerName>HEISER JAMES S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector>
<isOfficer>1</isOfficer>
<isTenPercentOwner>0</isTenPercentOwner>
<isOther>0</isOther>
<officerTitle>VP, CFO &amp; Gen. Cnsl.</officerTitle>
<otherText></otherText></reportingOwnerRelationship></reportingOwner>
<derivativeSecurity>
<securityTitle>
<value>Option - right to buy</value>
<footnoteId id="F1"/></securityTitle>
<conversionOrExercisePrice>
<value>15.80</value></conversionOrExercisePrice>
<transactionDate>
<value>2003-07-17</value></transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>A</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved></transactionCoding>
<transactionAmounts>
<transactionShares>
<value>25000</value></transactionShares>
<transactionValue>
<value>0</value></transactionValue>
<transactionAcquiredDisposedCode>
<value>A</value></transactionAcquiredDisposedCode></transactionAmounts>
<exerciseDate>
<value>2004-07-17</value>
<footnoteId id="F2"/></exerciseDate>
<expirationDate>
<value>2010-07-16</value></expirationDate>
<underlyingSecurity>
<underlyingSecurityTitle>
<value>Common Stock</value></underlyingSecurityTitle>
<underlyingSecurityShares>
<value>25000</value></underlyingSecurityShares></underlyingSecurity>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>25000</value></sharesOwnedFollowingTransaction></postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>D</value></directOrIndirectOwnership>
<natureOfOwnership>
<value></value></natureOfOwnership></ownershipNature></derivativeSecurity>
<footnotes>
<footnote id="F1">*The option represents the right to purchase common stock granted under the Ducommun Incorporated Employee Stock Option Plans, which are Rule 16b-3 plans.</footnote>
<footnote id="F2">**The option will vest in four equal installments on July 17, 2004, 2005, 2006 and 2007.</footnote></footnotes>
<ownerSignature>
<signatureName>James S. Heiser</signatureName>
<signatureDate>2003-07-18</signatureDate></ownerSignature></ownershipDocument>


</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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