-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 D3I1trc3EFuIGtmJRIN+rVRtZ9TnLXC1YUVk/LJoBPdbG4NKn2SmHyiZtY51uPjj
 KU5A9vGKlWpE13Z9IqAGBg==

<SEC-DOCUMENT>0000919574-09-016859.txt : 20091222
<SEC-HEADER>0000919574-09-016859.hdr.sgml : 20091222
<ACCEPTANCE-DATETIME>20091222170136
ACCESSION NUMBER:		0000919574-09-016859
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20091218
FILED AS OF DATE:		20091222
DATE AS OF CHANGE:		20091222

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CONWAY RICHARD F
		CENTRAL INDEX KEY:			0001299904

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-51552
		FILM NUMBER:		091255761

	MAIL ADDRESS:	
		STREET 1:		C/O LAMPE, CONWAY & CO. LLC
		STREET 2:		680 FIFTH AVENUE, SUITE 1202
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ATS CORP
		CENTRAL INDEX KEY:			0001325460
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MANAGEMENT CONSULTING SERVICES [8742]
		IRS NUMBER:				113747950
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		7925 JONES BRANCH DRIVE
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22102
		BUSINESS PHONE:		571-766-2400

	MAIL ADDRESS:	
		STREET 1:		7925 JONES BRANCH DRIVE
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22102

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Federal Services Acquisition CORP
		DATE OF NAME CHANGE:	20050429

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LC CAPITAL MASTER FUND LTD
		CENTRAL INDEX KEY:			0001222051

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-51552
		FILM NUMBER:		091255764

	BUSINESS ADDRESS:	
		STREET 1:		C/O LAMPE CONWAY & CO LLC
		STREET 2:		730 FIFTH AVENUE STE 1002
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019-4105
		BUSINESS PHONE:		2125818989

	MAIL ADDRESS:	
		STREET 1:		C/O TRIDENT FUND SERVICES (BVI) LIMITED
		STREET 2:		PO BOX 146, WATERFRONT DR, WICKHAMS CAY
		CITY:			ROAD TOWN, TORTOLA
		STATE:			D8
		ZIP:			00000

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LAMPE STEVEN
		CENTRAL INDEX KEY:			0001260818

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-51552
		FILM NUMBER:		091255762

	MAIL ADDRESS:	
		STREET 1:		C/O LAMPE, CONWAY & CO. LLC
		STREET 2:		680 FIFTH AVENUE, SUITE 1202
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LAMPE, CONWAY & CO. LLC
		CENTRAL INDEX KEY:			0001299982

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-51552
		FILM NUMBER:		091255763

	BUSINESS ADDRESS:	
		STREET 1:		680 FIFTH AVENUE, SUITE 1202
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019
		BUSINESS PHONE:		2125818989

	MAIL ADDRESS:	
		STREET 1:		680 FIFTH AVENUE, SUITE 1202
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>p1058126_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-12-18</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001325460</issuerCik>
        <issuerName>ATS CORP</issuerName>
        <issuerTradingSymbol>ATCT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001222051</rptOwnerCik>
            <rptOwnerName>LC CAPITAL MASTER FUND LTD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O TRIDENT FUND SERVICES (BVI) LIMITED</rptOwnerStreet1>
            <rptOwnerStreet2>PO BOX 146, WATERFRONT DR, WICKHAMS CAY</rptOwnerStreet2>
            <rptOwnerCity>ROAD TOWN, TORTOLA</rptOwnerCity>
            <rptOwnerState>D8</rptOwnerState>
            <rptOwnerZipCode>00000</rptOwnerZipCode>
            <rptOwnerStateDescription>VIRGIN ISLANDS, BRITISH</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001299982</rptOwnerCik>
            <rptOwnerName>LAMPE, CONWAY &amp; CO. LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>680 FIFTH AVENUE, SUITE 1202</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10019</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001260818</rptOwnerCik>
            <rptOwnerName>LAMPE STEVEN</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O LAMPE, CONWAY &amp; CO. LLC</rptOwnerStreet1>
            <rptOwnerStreet2>680 FIFTH AVENUE, SUITE 1202</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10019</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001299904</rptOwnerCik>
            <rptOwnerName>CONWAY RICHARD F</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O LAMPE, CONWAY &amp; CO. LLC</rptOwnerStreet1>
            <rptOwnerStreet2>680 FIFTH AVENUE, SUITE 1202</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10019</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-12-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>300000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.30</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4354336</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-12-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>0</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4354336</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These securities are owned by LC Capital Master Fund, Ltd., which is a Reporting Person.</footnote>
        <footnote id="F2">These securities may be deemed to be beneficially owned by Lampe, Conway &amp; Co., LLC, the investment manager of LC Capital
 Master Fund, Ltd., Steven G. Lampe, a managing member of Lampe, Conway &amp; Co., LLC and Richard F. Conway, a managing member
 of Lampe, Conway &amp; Co., LLC. Each such Reporting Person disclaims beneficial ownership of the reported securities except to
 the extent of his or its pecuniary interest therein, and this report shall not be deemed an admission that such Reporting
 Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as
 amended, or for any other purpose.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>LC Capital Master Fund, Ltd., By: /s/ Richard F. Conway, Director</signatureName>
        <signatureDate>2009-12-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Lampe, Conway &amp; Co., LLC, By: /s/ Richard F. Conway, Managing Member</signatureName>
        <signatureDate>2009-12-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Steven G. Lampe</signatureName>
        <signatureDate>2009-12-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Richard F. Conway</signatureName>
        <signatureDate>2009-12-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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