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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 JFmLzvbfkTRNkqAK32Cs1NE6rxsL3zQnGdedTuVXCfKPNfaM5E07UIf1flluhCP0
 L8A4ivMDQtFqgCo6afeO4A==

<SEC-DOCUMENT>0000950116-03-003606.txt : 20030818
<SEC-HEADER>0000950116-03-003606.hdr.sgml : 20030818
<ACCEPTANCE-DATETIME>20030818134022
ACCESSION NUMBER:		0000950116-03-003606
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030721
FILED AS OF DATE:		20030818

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MITCHELL WILLIAM F
		CENTRAL INDEX KEY:			0000908840

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10655
		FILM NUMBER:		03852528

	BUSINESS ADDRESS:	
		STREET 1:		C/O ENVIRONMENTAL TECTONICS CORP
		STREET 2:		COUNTY LINE INDUSTRIAL PARK
		CITY:			SOUTHAMPTON
		STATE:			PA
		ZIP:			18966

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ENVIRONMENTAL TECTONICS CORP
		CENTRAL INDEX KEY:			0000033113
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
		IRS NUMBER:				231714256
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			0228

	BUSINESS ADDRESS:	
		STREET 1:		COUNTY LINE INDUSTRIAL PARK
		CITY:			SOUTHAMPTON
		STATE:			PA
		ZIP:			18966
		BUSINESS PHONE:		2153559100

	MAIL ADDRESS:	
		STREET 1:		COUNTYLINE INDUSTRIAL PARK
		CITY:			SOUTHAMPTON
		STATE:			PA
		ZIP:			18966

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ENVIRONMENTAL TECHNOLOGY CORP
		DATE OF NAME CHANGE:	19730208
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>p326664_ex.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<!-- - EDGAR Ease Plus 1.0                                   07/25/03  TT    -->
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>
   <periodOfReport>2003-07-21</periodOfReport>
   <notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000033113</issuerCik>
        <issuerName>ENVIRONMENTAL TECTONICS CORP</issuerName>
        <issuerTradingSymbol>ETC</issuerTradingSymbol>
   </issuer>
   <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000908840</rptOwnerCik>
            <rptOwnerName>MITCHELL WILLIAM F</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ENVIRONMENTAL TECTONICS CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>125 JAMESWAY</rptOwnerStreet2>
            <rptOwnerCity>SOUTHAMPTON</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>18966</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
         <isDirector>1</isDirector>
         <isOfficer>1</isOfficer>
         <isTenPercentOwner>1</isTenPercentOwner>
         <isOther>0</isOther>
         <officerTitle>President</officerTitle>
      </reportingOwnerRelationship>
   </reportingOwner>
 <nonDerivativeTable>
   <nonDerivativeTransaction>
      <securityTitle>
         <value>Common Stock</value>
      </securityTitle>
      <transactionDate>
         <value>2003-07-21</value>
      </transactionDate>
      <transactionCoding>
         <transactionFormType>4</transactionFormType>
         <transactionCode>P</transactionCode>
         <equitySwapInvolved>0</equitySwapInvolved>
      </transactionCoding>
      <transactionAmounts>
         <transactionShares>
           <value>1000</value>
         </transactionShares>
         <transactionPricePerShare>
           <value>5.155</value>
         </transactionPricePerShare>
         <transactionAcquiredDisposedCode>
           <value>A</value>
         </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <postTransactionAmounts>
         <sharesOwnedFollowingTransaction>
           <value>1470198</value>
         </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
         <directOrIndirectOwnership>
            <value>D</value>
         </directOrIndirectOwnership>
      </ownershipNature>
   </nonDerivativeTransaction>
   <nonDerivativeHolding>
      <securityTitle>
         <value>Common Stock</value>
      </securityTitle>
      <postTransactionAmounts>
         <sharesOwnedFollowingTransaction>
           <value>155200</value>
         </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
         <directOrIndirectOwnership>
            <value>I</value>
         </directOrIndirectOwnership>
         <natureOfOwnership>
            <value>Held by spouse</value>
         </natureOfOwnership>
      </ownershipNature>
   </nonDerivativeHolding>
 </nonDerivativeTable>
   <ownerSignature>
      <signatureName>William F. Mitchell</signatureName>
      <signatureDate>2003-08-18</signatureDate>
   </ownerSignature>
</ownershipDocument>

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