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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 G1CgczN2zHGRAdjh8ZD5BVHFh8SlZymCxMyMDV8A6qrlB8r0GrHC77XD62OZy/Sq
 4uVP3jB3Gpq5sB668dyP+Q==

<SEC-DOCUMENT>0001214659-06-002001.txt : 20061012
<SEC-HEADER>0001214659-06-002001.hdr.sgml : 20061012
<ACCEPTANCE-DATETIME>20061012165709
ACCESSION NUMBER:		0001214659-06-002001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20061010
FILED AS OF DATE:		20061012
DATE AS OF CHANGE:		20061012

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SKYTERRA COMMUNICATIONS INC
		CENTRAL INDEX KEY:			0000756502
		STANDARD INDUSTRIAL CLASSIFICATION:	COMMUNICATION SERVICES, NEC [4899]
		IRS NUMBER:				232368845
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		19 WEST 44TH STREET
		STREET 2:		SUITE 507
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		212-730-7540

	MAIL ADDRESS:	
		STREET 1:		19 WEST 44TH STREET
		STREET 2:		SUITE 507
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	RARE MEDIUM GROUP INC
		DATE OF NAME CHANGE:	19990414

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ICC TECHNOLOGIES INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTERNATIONAL COGENERATION CORP
		DATE OF NAME CHANGE:	19891005

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MOTIENT CORP
		CENTRAL INDEX KEY:			0000913665
		STANDARD INDUSTRIAL CLASSIFICATION:	COMMUNICATION SERVICES, NEC [4899]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-13865
		FILM NUMBER:		061142536

	BUSINESS ADDRESS:	
		STREET 1:		12010 SUNSET HILLS ROAD,
		STREET 2:		6TH FLOOR
		CITY:			RESTON
		STATE:			VA
		ZIP:			20190
		BUSINESS PHONE:		703-483-7806

	MAIL ADDRESS:	
		STREET 1:		12010 SUNSET HILLS ROAD,
		STREET 2:		6TH FLOOR
		CITY:			RESTON
		STATE:			VA
		ZIP:			20190

	FORMER NAME:	
		FORMER CONFORMED NAME:	AMERICAN MOBILE SATELLITE CORP
		DATE OF NAME CHANGE:	19931019
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>f101163f4_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-10-10</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0000756502</issuerCik>
        <issuerName>SKYTERRA COMMUNICATIONS INC</issuerName>
        <issuerTradingSymbol>SKYT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000913665</rptOwnerCik>
            <rptOwnerName>MOTIENT CORP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>300 KNIGHTSBRIDGE PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LINCOLNSHIRE</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60069</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>2006-10-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>3573215</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>13.15</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By MVH Holdings Inc.</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Shares held by MVH Holdings Inc., a wholly-owned subsidiary of Motient Corporation.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Jeffrey Epstein</signatureName>
        <signatureDate>2006-10-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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