SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 ---------------- SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(a) (Amendment No. 4) Skyterra Communications, Inc. -------------------------------------------------------------------------------- (Name of Issuer) Voting Common Stock -------------------------------------------------------------------------------- (Title of Class of Securities) 83087K107 -------------------------------------------------------------------------------- (CUSIP Number) Joel Piassick One Riverchase Parkway South Birmingham, Alabama 35244 -------------------------------------------------------------------------------- (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) September 21, 2006 -------------------------------------------------------------------------------- (Date of Event which Requires Filing of This Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box [ ]. Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent. ---------- (1) The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). CUSIP No. 83087K107 --------------------- 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Harbinger Capital Partners Master Fund I, Ltd. 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] 3. SEC USE ONLY 4. SOURCE OF FUNDS* WC 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] 6. CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON 7. SOLE VOTING POWER 0 8. SHARED VOTING POWER 4,433,262 9. SOLE DISPOSITIVE POWER 0 10. SHARED DISPOSITIVE POWER 4,433,262 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,433,262 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 16.7% 14. TYPE OF REPORTING PERSON* CO CUSIP No. 83087K107 --------------------- 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Harbinger Capital Partners Offshore Manager, L.L.C. 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] 3. SEC USE ONLY 4. SOURCE OF FUNDS* AF 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] 6. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON 7. SOLE VOTING POWER 0 8. SHARED VOTING POWER 4,433,262 9. SOLE DISPOSITIVE POWER 0 10. SHARED DISPOSITIVE POWER 4,433,262 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,433,262 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 16.7% 14. TYPE OF REPORTING PERSON* CO CUSIP No. 83087K107 --------------------- 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) HMC Investors, L.L.C. 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] 3. SEC USE ONLY 4. SOURCE OF FUNDS* AF 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] 6. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON 7. SOLE VOTING POWER 0 8. SHARED VOTING POWER 4,433,262 9. SOLE DISPOSITIVE POWER 0 10. SHARED DISPOSITIVE POWER 4,433,262 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,433,262 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 16.7% 14. TYPE OF REPORTING PERSON* CO CUSIP No. 83087K107 --------------------- 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Harbinger Capital Partners Special Situations Fund, L.P. 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] 3. SEC USE ONLY 4. SOURCE OF FUNDS* WC 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] 6. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON 7. SOLE VOTING POWER 0 8. SHARED VOTING POWER 1,500,000 9. SOLE DISPOSITIVE POWER 0 10. SHARED DISPOSITIVE POWER 1,500,000 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,500,000 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.6% 14. TYPE OF REPORTING PERSON* CO CUSIP No. 83087K107 --------------------- 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Harbinger Capital Partners Special Situations GP, LLC 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] 3. SEC USE ONLY 4. SOURCE OF FUNDS* AF 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] 6. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON 7. SOLE VOTING POWER 0 8. SHARED VOTING POWER 1,500,000 9. SOLE DISPOSITIVE POWER 0 10. SHARED DISPOSITIVE POWER 1,500,000 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,500,000 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.6% 14. TYPE OF REPORTING PERSON* CO CUSIP No. 83087K107 --------------------- 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) HMC - New York, Inc. 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] 3. SEC USE ONLY 4. SOURCE OF FUNDS* AF 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] 6. CITIZENSHIP OR PLACE OF ORGANIZATION New York NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON 7. SOLE VOTING POWER 0 8. SHARED VOTING POWER 1,500,000 9. SOLE DISPOSITIVE POWER 0 10. SHARED DISPOSITIVE POWER 1,500,000 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,500,000 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.6% 14. TYPE OF REPORTING PERSON* CO CUSIP No. 83087K107 --------------------- 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Harbert Management Corporation 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] 3. SEC USE ONLY 4. SOURCE OF FUNDS* AF 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] 6. CITIZENSHIP OR PLACE OF ORGANIZATION Alabama NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON 7. SOLE VOTING POWER 0 8. SHARED VOTING POWER 5,933,262 9. SOLE DISPOSITIVE POWER 0 10. SHARED DISPOSITIVE POWER 5,933,262 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,933,262 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 22.3% 14. TYPE OF REPORTING PERSON* CO CUSIP No. 83087K107 --------------------- 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Philip Falcone 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] 3. SEC USE ONLY 4. SOURCE OF FUNDS* AF 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] 6. CITIZENSHIP OR PLACE OF ORGANIZATION U.S.A. NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON 7. SOLE VOTING POWER 0 8. SHARED VOTING POWER 5,933,262 9. SOLE DISPOSITIVE POWER 0 10. SHARED DISPOSITIVE POWER 5,933,262 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,933,262 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 22.3% 14. TYPE OF REPORTING PERSON* IN CUSIP No. 83087K107 --------------------- 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Raymond J. Harbert 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] 3. SEC USE ONLY 4. SOURCE OF FUNDS* AF 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] 6. CITIZENSHIP OR PLACE OF ORGANIZATION U.S.A. NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON 7. SOLE VOTING POWER 0 8. SHARED VOTING POWER 5,933,262 9. SOLE DISPOSITIVE POWER 0 10. SHARED DISPOSITIVE POWER 5,933,262 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,933,262 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 22.3% 14. TYPE OF REPORTING PERSON* IN CUSIP No. 83087K107 --------------------- 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Michael D. Luce 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [x] 3. SEC USE ONLY 4. SOURCE OF FUNDS* AF 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] 6. CITIZENSHIP OR PLACE OF ORGANIZATION U.S.A. NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON 7. SOLE VOTING POWER 0 8. SHARED VOTING POWER 5,933,262 9. SOLE DISPOSITIVE POWER 0 10. SHARED DISPOSITIVE POWER 5,933,262 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,933,262 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 22.3% 14. TYPE OF REPORTING PERSON* IN CUSIP No. 83087K107 --------------------- -------------------------------------------------------------------------------- Item 1. Security and Issuer. Skyterra Communications, Inc. (the "Issuer"), Voting Common Stock (the "Shares") The address of the issuer is 19 West 44th Street, Suite 507, New York, New York 10036. -------------------------------------------------------------------------------- Item 2. Identity and Background. (a-c,f) This Schedule 13D is being filed by Harbinger Capital Partners Master Fund I, Ltd. (the "Master Fund"), Harbinger Capital Partners Offshore Manager, L.L.C. ("Harbinger Management"), the investment manager of the Master Fund, HMC Investors, L.L.C., its managing member ("HMC Investors"), Harbinger Capital Partners Special Situations Fund, L.P. (the "Special Fund"), Harbinger Capital Partners Special Situations GP, LLC, the general partner of the Special Fund ("HCPSS"), HMC - New York, Inc., the managing member of HCPSS ("HMCNY"), Harbert Management Corporation ("HMC"), the managing member of HMC Investors and the parent of HMCNY, Philip Falcone, a shareholder of HMC and the portfolio manager of the Master Fund and the Special Fund, Raymond J. Harbert , a shareholder of HMC, and Michael D. Luce, a shareholder of HMC (each of the Master Fund, Harbinger Management, HMC Investors, HMC, Special Fund, HCPSS, HMCNY, Philip Falcone, Raymond J. Harbert and Michael D. Luce may be referred to herein as a "Reporting Person" and collectively may be referred to as "Reporting Persons"). The Master Fund is a Cayman Islands corporation with its principal business address at c/o International Fund Services (Ireland) Limited, Third Floor, Bishop's Square, Redmond's Hill, Dublin 2, Ireland. Each of Harbinger Management, HMC Investors and HCPSS is a Delaware limited liability company. The Special Fund is a Delaware limited partnership. HMC is an Alabama corporation. HMCNY is a New York corporation. Each of Philip Falcone, Raymond J. Harbert and Michael D. Luce is a United States citizen. The principal business address for each of the Special Fund, HCPSS, HMCNY and Philip Falcone is 555 Madison Avenue, 16th Floor, New York, New York 10022. The principal business address for each of Harbinger Management, HMC Investors, HMC, Raymond J. Harbert and Michael D. Luce is One Riverchase Parkway South, Birmingham, Alabama 35244. (d) None of Philip Falcone, Raymond J. Harbert or Michael D. Luce has, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors). (e) None of the Reporting Persons have, during the last five years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding were or are subject to a judgement, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, Federal or state securities laws or finding any violation with respect to such laws. -------------------------------------------------------------------------------- Item 3. Source and Amount of Funds or Other Consideration. As of the date hereof the Master Fund may be deemed to beneficially own 4,433,262 Shares. As of the date hereof Harbinger Management may be deemed to beneficially own 4,433,262 Shares. As of the date hereof HMC Investors may be deemed to beneficially own 4,433,262 Shares. As of the date hereof the Special Fund may be deemed to beneficially own 1,500,000 Shares. As of the date hereof HCPSS may be deemed to beneficially own 1,500,000 Shares. As of the date hereof HMCNY may be deemed to beneficially own 1,500,000 Shares. As of the date hereof HMC may be deemed to beneficially own 5,933,262 Shares. As of the date hereof Philip Falcone may be deemed to beneficially own 5,933,262 Shares. As of the date hereof Raymond J. Harbert may be deemed to beneficially own 5,933,262 Shares. As of the date hereof Michael D. Luce may be deemed to beneficially own 5,933,262 Shares. No borrowed funds were used to purchase the Shares, other than any borrowed funds used for working capital purposes in the ordinary course of business. -------------------------------------------------------------------------------- Item 4. Purpose of Transaction. The Reporting Persons have acquired their Shares of the Issuer for investment. The Reporting Persons evaluate their investment in the Shares on a continual basis. The Reporting Persons have no plans or proposals as of the date of this filing which, other than as expressly set forth below, relate to, or would result in, any of the actions enumerated in Item 4 of the instructions to Schedule 13D. The Reporting Persons reserve the right to be in contact with members of the Issuer's management, the members of the Issuer's Board of Directors, other significant shareholders and others regarding alternatives that the Issuer could employ to increase shareholder value. The Reporting Persons reserve the right to effect transactions that would change the number of shares they may be deemed to beneficially own. The Reporting Persons further reserve the right to act in concert with any other shareholders of the Issuer, or other persons, for a common purpose should it determine to do so, and/or to recommend courses of action to the Issuer's management, the Issuer's Board of Directors, the Issuer's shareholders and others. -------------------------------------------------------------------------------- Item 5. Interest in Securities of the Issuer. (a, b) As of the date hereof, the Master Fund may be deemed to be the beneficial owner of 4,433,262 Shares, constituting 16.7% of the Shares of the Issuer, based upon 26,564,206 Shares outstanding as of September 21, 2006. The Master Fund has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 4,433,262 Shares; has sole power to dispose or direct the disposition of 0 Shares; and has shared power to dispose or direct the disposition of 4,433,262 Shares. (a, b) As of the date hereof, Harbinger Management may be deemed to be the beneficial owner of 4,433,262 Shares, constituting 16.7% of the Shares of the Issuer, based upon 26,564,206 Shares outstanding as of September 21, 2006. Harbinger Management has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 4,433,262 Shares; has sole power to dispose or direct the disposition of 0 Shares; and has shared power to dispose or direct the disposition of 4,433,262 Shares. Harbinger Management specifically disclaims beneficial ownership in the Shares reported herein except to the extent of its pecuniary interest therein. (a, b) As of the date hereof, HMC Investors may be deemed to be the beneficial owner of 4,433,262 Shares, constituting 16.7% of the Shares of the Issuer, based upon 26,564,206 Shares outstanding as of September 21, 2006. HMC Investors has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 4,433,262 Shares; has sole power to dispose or direct the disposition of 0 Shares; and has shared power to dispose or direct the disposition of 4,433,262 Shares. HMC Investors specifically disclaims beneficial ownership in the Shares reported herein except to the extent of its pecuniary interest therein. (a, b) As of the date hereof, the Special Fund may be deemed to be the beneficial owner of 1,500,000 Shares, constituting 5.6% of the Shares of the Issuer, based upon 26,564,206 Shares outstanding as of September 21, 2006. The Special Fund has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 1,500,000 Shares; has sole power to dispose or direct the disposition of 0 Shares; and has shared power to dispose or direct the disposition of 1,500,000 Shares. The Special Fund specifically disclaims beneficial ownership in the Shares reported herein except to the extent of its pecuniary interest therein. (a, b) As of the date hereof, HCPSS may be deemed to be the beneficial owner of 1,500,000 Shares, constituting 5.6% of the Shares of the Issuer, based upon 26,564,206 Shares outstanding as of September 21, 2006. HCPSS has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 1,500,000 Shares; has sole power to dispose or direct the disposition of 0 Shares; and has shared power to dispose or direct the disposition of 1,500,000 Shares. HCPSS specifically disclaims beneficial ownership in the Shares reported herein except to the extent of its pecuniary interest therein. (a, b) As of the date hereof, HMCNY may be deemed to be the beneficial owner of 1,500,000 Shares, constituting 5.6% of the Shares of the Issuer, based upon 26,564,206 Shares outstanding as of September 21, 2006. HMCNY has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 1,500,000 Shares; has sole power to dispose or direct the disposition of 0 Shares; and has shared power to dispose or direct the disposition of 1,500,000 Shares. HMCNY specifically disclaims beneficial ownership in the Shares reported herein except to the extent of its pecuniary interest therein. (a, b) As of the date hereof, HMC may be deemed to be the beneficial owner of 5,933,262 Shares, constituting 22.3% of the Shares of the Issuer, based upon 26,564,206 Shares outstanding as of September 21, 2006. HMC has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 5,933,262 Shares; has sole power to dispose or direct the disposition of 0 Shares; and has shared power to dispose or direct the disposition of 5,933,262 Shares. HMC specifically disclaims beneficial ownership in the Shares reported herein except to the extent of its pecuniary interest therein. (a, b) As of the date hereof, Philip Falcone may be deemed to be the beneficial owner of 5,933,262 Shares, constituting 22.3% of the Shares of the Issuer, based upon 26,564,206 Shares outstanding as of September 21, 2006. Mr. Falcone has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 5,933,262 Shares; has sole power to dispose or direct the disposition of 0 Shares; and has shared power to dispose or direct the disposition of 5,933,262 Shares. Mr. Falcone specifically disclaims beneficial ownership in the Shares reported herein except to the extent of his pecuniary interest therein. (a, b) As of the date hereof, Raymond J. Harbert may be deemed to be the beneficial owner of 5,933,262 Shares, constituting 22.3% of the Shares of the Issuer, based upon 26,564,206 Shares outstanding as of September 21, 2006. Mr. Harbert has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 5,933,262 Shares; has sole power to dispose or direct the disposition of 0 Shares; and has shared power to dispose or direct the disposition of 5,933,262 Shares. Mr. Harbert specifically disclaims beneficial ownership in the Shares reported herein except to the extent of his pecuniary interest therein. (a, b) As of the date hereof, Michael D. Luce may be deemed to be the beneficial owner of 5,933,262 Shares, constituting 22.3% of the Shares of the Issuer, based upon 26,564,206 Shares outstanding as of September 21, 2006. Mr. Luce has the sole power to vote or direct the vote of 0 Shares; has the shared power to vote or direct the vote of 5,933,262 Shares; has sole power to dispose or direct the disposition of 0 Shares; and has shared power to dispose or direct the disposition of 5,933,262 Shares. Mr. Luce specifically disclaims beneficial ownership in the Shares reported herein except to the extent of his pecuniary interest therein. (c) The trading dates, number of Shares purchased and sold and price per share for all transactions in the Shares by the Reporting Persons are set forth in Exhibit B. -------------------------------------------------------------------------------- Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer. N/A. -------------------------------------------------------------------------------- Item 7. Material to be Filed as Exhibits. Exhibit A: Agreement between the Reporting Persons to file jointly Exhibit B: Schedule of Transactions in the Shares of the Issuer SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Harbinger Capital Partners Master Fund I, Ltd. By: Harbinger Capital Partners Offshore Manager, L.L.C. By: HMC Investors, L.L.C., Managing Member By: /s/ Joel B. Piassick -------------------------- Harbinger Capital Partners Offshore Manager, L.L.C.* By: HMC Investors, L.L.C., Managing Member By: /s/ Joel B. Piassick -------------------------- HMC Investors, L.L.C.* By: /s/ Joel B. Piassick -------------------------- Harbinger Capital Partners Special Situations Fund, L.P. By: Harbinger Capital Partners Special Situations GP, LLC By: HMC - New York, Inc., Managing Member By: /s/ Joel B. Piassick -------------------------- Harbinger Capital Partners Special Situations GP, LLC* By: HMC - New York, Inc., Managing Member By: /s/ Joel B. Piassick -------------------------- HMC - New York, Inc.* By: /s/ Joel B. Piassick -------------------------- Harbert Management Corporation* By: /s/ Joel B. Piassick -------------------------- /s/ Philip Falcone* -------------------------- Philip Falcone /s/ Raymond J. Harbert* -------------------------- Raymond J. Harbert /s/ Michael D. Luce* -------------------------- Michael D. Luce October 13, 2006 Attention. Intentional misstatements or omissions of fact constitute federal criminal violations (see 18 U.S.C. 1001). Exhibit A AGREEMENT The undersigned agree that this Schedule 13D, Amendment No. 4 dated October 13, 2006 relating to the Voting Common Stock of Skyterra Communications, Inc. shall be filed on behalf of the undersigned. Harbinger Capital Partners Master Fund I, Ltd. By: Harbinger Capital Partners Offshore Manager, L.L.C. By: HMC Investors, L.L.C., Managing Member By: /s/ Joel B. Piassick -------------------------- Harbinger Capital Partners Offshore Manager, L.L.C.* By: HMC Investors, L.L.C., Managing Member By: /s/ Joel B. Piassick -------------------------- HMC Investors, L.L.C.* By: /s/ Joel B. Piassick -------------------------- Harbinger Capital Partners Special Situations Fund, L.P. By: Harbinger Capital Partners Special Situations GP, LLC By: HMC - New York, Inc., Managing Member By: /s/ Joel B. Piassick -------------------------- Harbinger Capital Partners Special Situations GP, LLC* By: HMC - New York, Inc., Managing Member By: /s/ Joel B. Piassick -------------------------- HMC - New York, Inc.* By: /s/ Joel B. Piassick -------------------------- Harbert Management Corporation* By: /s/ Joel B. Piassick -------------------------- /s/ Philip Falcone* -------------------------- Philip Falcone /s/ Raymond J. Harbert* -------------------------- Raymond J. Harbert /s/ Michael D. Luce* -------------------------- Michael D. Luce *The Reporting Persons disclaim beneficial ownership in the shares reported herein except to the extent of their pecuniary interest therein. Exhibit B Transactions in the Voting Common Stock --------------------------------------- TRANSACTIONS BY HARBINGER CAPITAL PARTNERS MASTER FUND I, LTD. Date of Number of Shares Transaction Purchase/(Sold) Price per Share ----------- --------------- --------------- 10/10/06 1,073,214 13.15 10/12/06 100,000 12.95 10/12/06 30,000 12.95 TRANSACTIONS BY HARBINGER CAPITAL PARTNERS SPECIAL SITUATIONS FUND, L.P. Date of Number of Shares Transaction Purchase/(Sold) Price per Share ----------- --------------- --------------- 10/10/06 1,500,000 13.15 SK 03773 0003 711425