Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
HARBINGER CAPITAL PARTNERS MASTER FUND I, LTD.
  2. Issuer Name and Ticker or Trading Symbol
SKYTERRA COMMUNICATIONS INC [SKYT]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) __X__ Other (specify below)
*See Remarks
(Last)
(First)
(Middle)
C/O INTERNATIONAL FUND SERVICES LIMITED, THIRD FL, BISHOP'S SQUARE REDMOND'S HILL
3. Date of Earliest Transaction (Month/Day/Year)
04/01/2009
(Street)

DUBLIN, L2 00000
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Warrants $ 0.01 04/01/2009   P   15,937,500   04/01/2009 01/07/2014 Common Stock 15,937,500 (9) 21,562,500 D (1) (2) (3) (4)  
Warrants $ 10             01/07/2008 01/06/2018 Common Stock 6,096,026   6,096,026 D (1) (2) (3) (4)  
Series 1-A Warrants $ 4.2 (8)             06/04/1999 06/04/2009 Common Stock 509,942   175,975 D (1) (2) (3) (4)  
Series 2-A Warrants $ 7             06/04/1999 06/04/2009 Common Stock 2,017,301   7,357,525 D (1) (2) (3) (4)  
Warrants $ 0.01 04/01/2009   P   5,312,500   04/01/2009 01/07/2014 Common Stock 5,312,500 (9) 7,187,500 D (1) (5) (6) (7)  
Warrants $ 10             01/07/2008 01/06/2018 Common Stock 3,048,012   3,048,012 D (1) (5) (6) (7)  
Series 1-A Warrants $ 4.2 (8)             06/04/1999 06/04/2009 Common Stock 169,981   58,658 D (1) (5) (6) (7)  
Series 2-A Warrants $ 7             06/04/1999 06/04/2009 Common Stock 672,434   2,452,508 D (1) (5) (6) (7)  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
HARBINGER CAPITAL PARTNERS MASTER FUND I, LTD.
C/O INTERNATIONAL FUND SERVICES LIMITED
THIRD FL, BISHOP'S SQUARE REDMOND'S HILL
DUBLIN, L2 00000
    X   *See Remarks
HARBINGER CAPITAL PARTNERS LLC
555 MADISON AVENUE, 16TH FLOOR
NEW YORK, NY 10022
    X   *See Remarks
HARBINGER CAPITAL PARTNERS SPECIAL SITUATIONS FUND, L.P.
555 MADISON AVENUE, 16TH FLOOR
NEW YORK, NY 10022
    X   *See Remarks
HARBINGER CAPITAL PARTNERS SPECIAL SITUATIONS GP, LLC
555 MADISON AVENUE, 16TH FLOOR
NEW YORK, NY 10022
    X   *See Remarks
HARBINGER HOLDINGS, LLC
555 MADISON AVENUE, 16TH FLOOR
NEW YORK, NY 10022
    X   *See Remarks
FALCONE PHILIP
555 MADISON AVE, 16TH FLOOR
NEW YORK, NY 10022
    X   *See Remarks

Signatures

 Harbinger Capital Partners Master Fund I, Ltd.(+), By: Harbinger Capital Partners LLC, By: Harbinger Holdings, LLC, Managing Member, By: /s/ Philip Falcone   04/03/2009
**Signature of Reporting Person Date

 Harbinger Capital Partners LLC(+), By: Harbinger Holdings, LLC, Managing Member, By: /s/ Philip Falcone   04/03/2009
**Signature of Reporting Person Date

 Harbinger Capital Partners Special Situations Fund, L.P.(+), By: Harbinger Capital Partners Special Situations GP, LLC, By: Harbinger Holdings, LLC, Managing Member, By: /s/ Philip Falcone   04/03/2009
**Signature of Reporting Person Date

 Harbinger Capital Partners Special Situations GP, LLC(+), By: Harbinger Holdings, LLC, Managing Member, By: /s/ Philip Falcone   04/03/2009
**Signature of Reporting Person Date

 Harbinger Holdings, LLC(+), By: /s/ Philip Falcone   04/03/2009
**Signature of Reporting Person Date

 /s/ Philip Falcone(+)   04/03/2009
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) IMPORTANT NOTE: THE SECURITIES SET FORTH IN THIS REPORT ARE DIRECTLY BENEFICIALLY OWNED BY HARBINGER CAPITAL PARTNERS MASTER FUND I, LTD. AND/OR HARBINGER CAPITAL PARTNERS SPECIAL SITUATIONS FUND, L.P. (COLLECTIVELY, THE "FUNDS"). ALL OTHER REPORTING PERSONS ARE INCLUDED WITHIN THIS REPORT DUE TO THEIR AFFILIATION WITH ONE OR BOTH OF THE FUNDS.
(2) These securities are owned by Harbinger Capital Partners Master Fund I, Ltd. (the "Master Fund"), which is a Reporting Person.
(3) These securities may be deemed to be indirectly beneficially owned by the following, each of whom is a Reporting Person: Harbinger Capital Partners LLC ("Harbinger LLC"), the investment manager of the Master Fund; Harbinger Holdings, LLC ("Harbinger Holdings"), the managing member of Harbinger LLC; and Philip Falcone, the managing member of Harbinger Holdings and the portfolio manager of the Master Fund.
(4) Each Reporting Person listed in Footnotes 2 and 3 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.
(5) These securities are owned by Harbinger Capital Partners Special Situations Fund, L.P. (the "Special Situations Fund"), which is a Reporting Person.
(6) These securities may be deemed to be indirectly beneficially owned by the following, each of whom is a Reporting Person: Harbinger Capital Partners Special Situations GP, LLC ("HCPSS"), the general partner of the Special Situations Fund; Harbinger Holdings, the managing member of HCPSS; and Philip Falcone, the portfolio manager of the Special Situations Fund.
(7) Each Reporting Person listed in Footnotes 5 and 6 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.
(8) The exercise price of the Series 1-A Warrants reported above may vary and is calculated and is subject to adjustment upon the occurrence of certain events as set forth in the warrant.
(9) In connection with the purchase of Notes pursuant to the Securities Purchase Agreement dated as of July 24, 2008, as amended pursuant to Amendment No. 1 dated January 7, 2009, between the Master Fund, the Special Situations Fund, SkyTerra Communications, Inc., SkyTerra LP and SkyTerra Finance Co., the Reporting Persons received Warrants as described in the Form of April 2009 Warrant attached as Exhibit V to the Schedule 13D/A filed by the Reporting Persons on January 13, 2009.
 
Remarks:
(+)  The Reporting Persons may be deemed to be members of a "group" for purposes of the Securities Exchange Act of 1934, as
 amended.  Each Reporting Person disclaims beneficial ownership of any securities deemed to be owned by the group that are
 not directly owned by the Reporting Person.  This report shall not be deemed an admission that such Reporting Person is a
 member of a group or the beneficial owner of any securities not directly owned by such Reporting Person.

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