-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 UTQpmeIfEWMtxfP5/ll/tzAKHukt98otyna7hNR80h9Ksfr8FTv4JY18fHiVlKM6
 KNNhaLXDuPk+K0ggEs+j7w==

<SEC-DOCUMENT>0000891836-07-000093.txt : 20070309
<SEC-HEADER>0000891836-07-000093.hdr.sgml : 20070309
<ACCEPTANCE-DATETIME>20070309160610
ACCESSION NUMBER:		0000891836-07-000093
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070307
FILED AS OF DATE:		20070309
DATE AS OF CHANGE:		20070309

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MOTIENT CORP
		CENTRAL INDEX KEY:			0000913665
		STANDARD INDUSTRIAL CLASSIFICATION:	COMMUNICATION SERVICES, NEC [4899]
		IRS NUMBER:				930976127
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	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 COMPANY:	
		FORMER CONFORMED NAME:	AMERICAN MOBILE SATELLITE CORP
		DATE OF NAME CHANGE:	19931019

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BCE INC
		CENTRAL INDEX KEY:			0000718940
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE COMMUNICATIONS (NO RADIO TELEPHONE) [4813]
		STATE OF INCORPORATION:			A8
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23044
		FILM NUMBER:		07684601

	BUSINESS ADDRESS:	
		STREET 1:		1000 DE LA GAUCHETIERE OUEST
		STREET 2:		BUREAU 4100 MONTREAL
		CITY:			QUEBEC CANADA
		STATE:			A8
		ZIP:			H3B 4Y7
		BUSINESS PHONE:		5143977000

	MAIL ADDRESS:	
		STREET 1:		1000 DE LA GAUCHETIERE OUEST
		STREET 2:		BUREAU 4100 MONTREAL
		CITY:			QUEBEC CANADA
		STATE:			A8
		ZIP:			H3B 4Y7

	FORMER NAME:	
		FORMER CONFORMED NAME:	BELL CANADA ENTERPRISES INC
		DATE OF NAME CHANGE:	19880111
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>sc0037-07_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-03-07</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0000913665</issuerCik>
        <issuerName>MOTIENT CORP</issuerName>
        <issuerTradingSymbol>MNCP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000718940</rptOwnerCik>
            <rptOwnerName>BCE INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1000 DE LA GAUCHETIERE OUEST</rptOwnerStreet1>
            <rptOwnerStreet2>BUREAU 4100 MONTREAL</rptOwnerStreet2>
            <rptOwnerCity>QUEBEC, CANADA</rptOwnerCity>
            <rptOwnerState>A8</rptOwnerState>
            <rptOwnerZipCode>H3B 4Y7</rptOwnerZipCode>
            <rptOwnerStateDescription>QUEBEC, CANADA</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>2007-03-07</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>X</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>9031213</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>9031213</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-03-07</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>4500000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8.15</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4531213</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Option to acquire</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-03-07</value>
                <footnoteId id="F2"/>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>X</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>9031213</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2006-10-05</value>
            </exerciseDate>
            <expirationDate>
                <value>2007-01-15</value>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>9031213</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">TMI Communications Delaware, Limited Partnership (&quot;TMI Delaware&quot;) had a contractual right to exchange 5,073,715 shares of
 common stock of TerreStar Networks, Inc and 1,887,133.89202 shares of common stock of TerreStar Global Ltd. (formerly known
 as TerreStar Networks Bermuda Ltd.) (collectively, the &quot;TerreStar Shares&quot;) for 9,031,213 shares (the &quot;Initial Motient
 Shares&quot;) of common stock of Motient Corporation (&quot;Motient&quot;).  On January 5, 2007 those rights to exchange were transferred
 to BCE Inc. (&quot;BCE&quot;), then the parent of TMI Delaware.  On January 15, 2007, BCE gave notice that it would be acquiring the
 Initial Motient Shares pursuant to those rights to exchange.  On March 7, 2008 the parties definitively scheduled a closing
 for that exchange and BCE agreed to sell 4,500,000 of the Initial Motient Shares. On March 8, 2007, BCE exchanged the
 TerreStar Shares for the Initial Motient Shares and sold 4,500,000 of those shares.</footnote>
        <footnote id="F2">The option to acquire was exercised on January 15, 2007 but the parties did not schedule a closing date until March 7, 2007.</footnote>
    </footnotes>

    <remarks>The original Form 3 filed for the shares covered by this Form 4 was filed jointly by BCE Inc. (&quot;BCE&quot;), TMI Communications
 Inc., 3924505 Canada Inc., TMI Communications and Company, Limited Partnership and TMI Communications Delaware, Limited
 Partnership (&quot;TMI Delaware&quot;).  On January 5, 2007, the rights of TMI Delaware under the option to acquire shares covered by
 that original Form 3 were transferred directly to BCE in a transaction exempt from liability under Section 16(b) of the
 Securities Exchange Act of 1934 and as a result only BCE continued to have  beneficial ownership of those shares.
 Accordingly, the persons other than BCE Inc. who had jointly filed the original Form 3 are no longer filing parties under
 this Form 4.</remarks>

    <ownerSignature>
        <signatureName>/s/ L. Scott Thomson</signatureName>
        <signatureDate>2007-03-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
