UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C.  20549

                                    FORM 10-K

     [X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
         EXCHANGE ACT OF 1934

     For the fiscal year ended December 31, 2006

     [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
     ACT OF 1934

     For the transition period to __________ from _______________

     Commission file number of issuing entity: 333-130694-02

              Morgan Stanley ABS Capital I Inc. Trust 2006-HE4
          (Exact name of issuing entity as specified in its Charter)

                      Morgan Stanley ABS Capital I Inc.
           (Exact name of depositor as specified in its Charter)

                     Morgan Stanley Mortgage Capital Inc.
             (Exact name of sponsor as specified in its Charter)

                                             Pooling-Tier REMIC-1 30-0370480
                                             Pooling-Tier REMIC-2 30-0370481
                                                 Lower-Tier REMIC 30-0370482
                                                 Upper-Tier REMIC 30-0370484
                 New York                           Grantor Trust 30-6122760
           (State or other jurisdiction                  (I.R.S. Employer
         incorporation or organization                Identification Number)
               of issuing entity)                        of issuing entity)

          1585 Broadway
          New York, New York                                    10036
(Address of principal executive offices                     (Zip Code of
         of issuing entity)                                issuing entity)

            Issuing entity's telephone number, including area code:
                               (212) 761-4000

          Securities registered pursuant to Section 12(b) of the Act:
                                     None.

          Securities registered pursuant to Section 12(g) of the Act:
                                     None.

     Indicate by check mark if the registrant is a well-known seasoned
     issuer, as defined in Rule 405 of the Securities Act.  Yes [ ]  No[X]

     Indicate by check mark if the registrant is not required to file
     reports pursuant to Section 13 or Section 15(d) of the Act.  Yes[ ] No[X]

     Indicate by check mark whether the registrant (1) has filed all reports
     required to be filed by Section 13 or 15(d) of the Securities Exchange
     Act of 1934 during the preceding 12 months (or for such shorter period
     that the registrant was required to file such reports), and (2) has been
     subject to such filing requirements for the past 90 days.  Yes [X]  No [ ]

     Indicate by check mark if disclosure of delinquent filers pursuant to
     Item 405 of Regulation S-K is not contained herein, and will not be
     contained, to the best of the registrant's knowledge, in definitive proxy
     or information statements incorporated by reference in Part III of the
     Form 10-K or any amendment to this Form 10-K.         [ ]

     Indicate by check mark whether the registrant is a large accelerated
     filer, an accelerated filer, or a non-accelerated filer.  See definition
     of "accelerated filer" in Rule 12b-2 of the Exchange Act.  (Check One):

      Large accelerated filer [  ]  Accelerated Filer [  ]
      Non-accelerated Filer [X]

     Indicate by check mark whether the registrant is a shell company (as
     defined in rule 12b-2 of the Act).  [  ] Yes  [X] No

     State the aggregate market value of the voting and non-voting common
     equity held by non-affiliates computed by reference to the price at
     which the common equity was last sold, or the average bid and asked
     price of such common equity, as of the of the last business day of
     the registrant's most recently completed second fiscal quarter

     Not Applicable.

     DOCUMENTS INCORPORATED BY REFERENCE

     See Item 15.

     PART I

     ITEM 1.  Business.

     Not Applicable.

     ITEM 1A.  Risk Factors.

     Not Applicable.

     ITEM 1B.  Unresolved Staff Comments.

     None.

     ITEM 2.  Properties.

     Not Applicable.

     ITEM 3.  Legal Proceedings.

     Not Applicable.

     ITEM 4.  Submission of Matters to a Vote of Security Holders.

     Not Applicable.

     PART II

     ITEM 5.  Market for Registrant's Common Equity, Related Stockholder
     Matters and Issuer Purchases of Equity Securities.

     Not Applicable.

     ITEM 6.  Selected Financial Data.

     Not Applicable.

     ITEM 7.  Management's Discussion and Analysis of Financial Condition and
     Results of Operations.

     Not Applicable.

     ITEM 7A.  Quantitative and Qualitative Disclosures About Market Risk.

     Not Applicable.

     ITEM 8.  Financial Statements and Supplementary Data.

     Not Applicable.

     ITEM 9.  Changes in and Disagreements with Accountants on Accounting and
     Financial Disclosure.

     Not Applicable.

     ITEM 9A  Controls and Procedures.

     Not Applicable.

     ITEM 9B. Other Information.

     None.

     PART III

     ITEM 10.  Directors, Executive Officers and Corporate Governance.

     Not Applicable.

     ITEM 11.  Executive Compensation.

     Not Applicable.

     ITEM 12.  Security Ownership of Certain Beneficial Owners and Management
               and Related Stockholder Matters.

     Not Applicable.

     ITEM 13.  Certain Relationships and Related Transactions, and
               Director Independence.

     Not Applicable.

     ITEM 14.  Principal Accounting Fees and Services.

     Not Applicable.

     PART IV

     Item 1112(b)(2) of Regulation AB, Significant Obligor Financial
     Information.

     No single obligor represents 10% or more of the pool assets held by the
     issuing entity.

     Item 1114(b)(2) and Item 1115(b) of Regulation AB , Significant
     Enhancement Provider Information.

     None.

     Item 1117 of Regulation AB, Legal Proceedings.

     None.

     Item 1119 of Regulation AB, Affiliations and Certain Relationships and
     Related Transactions.

     None.

     Item 1122 of Regulation AB, Compliance with Applicable Servicing Criteria.

     See Exhibit 33 and 34.

     The 1122 statements for Wells Fargo Bank, N.A. (servicer) has disclosed
     the following instances of material noncompliance with certain servicing
     criteria applicable to the Company during the year ended December 31, 2006:

     1. 1122(d)(3)(i) - Delinquency Reporting - The Company provided incomplete
        data to some third parties who use such data to calculate delinquency
        ratios and determine the status of loans with respect to bankruptcy,
        foreclosure or real estate owned. Instead of the actual due date being
        provided for use in calculating delinquencies, the date of the first
        payment due to the security was provided.

     2. 1122(d)(4)(vii) - Notification of Intent to Foreclose - The Company,
        as required by certain servicing agreements, did not provide investors
        with prior notification of intent to foreclose.

     The 1122 statements for Wells Fargo Bank, National Association (Corporate
     Trust Services) has disclosed material noncompliance with criterion
     1122(d)(3)(i), as applicable to the Company during the twelve months
     ended December 31. 2006.  Certain monthly investor or remittance reports
     included errors in the calculation and/or the reporting of delinquencies
     for the pool assets.

     Item 1123 of Regulation AB, Servicer Compliance Statement.

     See Exhibit 35.

     ITEM 15. Exhibits, Financial Statement Schedules.

     (a) List the following documents filed as a part of the report:

         (1) Not Applicable.

         (2) Not Applicable.

         (3)

       Exhibit 4.1 was filed as part of the Registrant's Current Report on
       Form 8-K filed on July 11, 2006 and is incorporated by reference:

         Exhibit 4.1 Pooling and Servicing Agreement, dated as of June 1, 2006,
         by and among the Depositor, as depositor, Wells Fargo Bank, National
         Association, as a servicer and a custodian, NC Capital Corporation,
         as a responsible party, WMC Mortgage Corp., as a responsible party,
         Decision One Mortgage Company, LLC, as a responsible party, LaSalle
         Bank National Association, as a custodian and Deutsche Bank National
         Trust Company, as trustee.

       Exhibit 4.1.2 was filed as part of the Registrant's Current Report on
       Form 8-K filed on December 1, 2006 and is incorporated by reference:

         Exhibit 4.1.2 Amendment No. 1 to the Pooling and Servicing Agreement,
         dated as of June 1, 2006, among Morgan Stanley ABS Capital I Inc.,
         as Depositor, Wells Fargo Bank, National Association, as Servicer and
         a Custodian, WMC Mortgage Corp., as a Responsible Party, Decision One
         Mortgage Company, LLC, as a Responsible Party, LaSalle Bank National
         Association, as a Custodian, and Deutsche Bank National Trust Company,
         as Trustee, relating to the Series 2006-HE4 Certificates.

       Exhibits 10 were filed as part of the Registrant's Current Report on
       Form 8-K filed on July 11, 2006 and are incorporated by reference:

         Exhibit 10.1 Mortgage Loan Purchase and Warranties Agreement, dated
         as of April 1, 2004 by and between WMC and the Sponsor (included as
         Exhibit O to Exhibit 4.1).

         Exhibit 10.2 Amendment No. 1, to the April 1, 2004 Mortgage Loan
         Purchase and Warranties Agreement, dated as of October 29, 2004, by
         and between WMC and the Sponsor (included as Exhibit O to Exhibit 4.1).

         Exhibit 10.3 Amendment No. 2, to the April 1, 2004 Mortgage Loan
         Purchase and Warranties Agreement, dated as of February 28, 2005,
         by and between WMC and the Sponsor (included as Exhibit O to
         Exhibit 4.1).

         Exhibit 10.4 Third Amended and Restated Mortgage Loan Purchase and
         Warranties Agreement, dated as of January 1, 2006, by and between
         WMC and the Sponsor (included as Exhibit O to Exhibit 4.1).

         Exhibit 10.5 The Third Amended and Restated Mortgage Loan Purchase
         and Warranties Agreement, dated as of June 1, 2006, by and between
         Decision One and the Sponsor (included as Exhibit P to Exhibit 4.1).

         Exhibit 10.6 The Fifth Amended and Restated Mortgage Loan Purchase
         and Warranties Agreement, dated as of March 1, 2006, by and between
         NC Capital and the Sponsor (included as Exhibit Q to Exhibit 4.1).

         Exhibit 10.7 The Flow Mortgage Loan Purchase and Warranties Agreement,
         dated as of September 1, 2004, by and between Option One and the
         Sponsor (included as Exhibit R to Exhibit 4.1).

         Exhibit 10.8 Amendment No. 1 to the September 1, 2004 Flow Mortgage
         Loan Purchase and Warranties Agreement , dated as of October 14, 2004,
         by and between Option One and the Sponsor (included as Exhibit R to
         Exhibit 4.1).

         Exhibit 10.9 Assignment and Recognition Agreement, dated as of June
         23, among the Sponsor, the Depositor and Option One. (included as
         Exhibit R to Exhibit 4.1).

         Exhibit 10.10  ISDA Master Agreement, dated as of June 23, 2006, by
         and between Morgan Stanley Capital Services Inc., the swap provider,
         and Deutsche Bank National Trust Company, the trustee (included as
         part of Exhibit X to Exhibit 4.1).

         Exhibit 10.11 Schedule to the Master Agreement, dated as of June 23,
         2006, by and between Morgan Stanley Capital Services Inc., the swap
         provider, and Deutsche Bank National Trust Company, the trustee
         (included as part of Exhibit X to Exhibit 4.1).

         Exhibit 10.12 Credit Support Annex, dated as of June 23, 2006, by and
         between Morgan Stanley Capital Services Inc., the swap provider, and
         Deutsche Bank National Trust Company, the trustee (included as part
         of Exhibit X to Exhibit 4.1).

         Exhibit 10.13 Confirmation, dated as of June 23, 2006, by and between
         Morgan Stanley Capital Services Inc., the swap provider, and Deutsche
         Bank National Trust Company, the trustee (included as part of Exhibit
         X to Exhibit 4.1).

         Exhibit 10.14 Guarantee, dated as of June 23, 2006, by Morgan Stanley
        (included as part of Exhibit X to Exhibit 4.1).

         Exhibit 10.15 Servicing Agreement, dated as of June 23, 2006, among
         Countrywide Home Loans Servicing LP, the Depositor and the Trustee,
        (included as part of Exhibit Z to Exhibit 4.1).

         Exhibit 10.16 Mortgage Loan Sale and Servicing Agreement, dated as of
         October 1, 2005, by and among Countrywide Home Loans, Inc., Countrywide
         Home Loans Servicing LP and the Sponsor.

         Exhibit 10.17 Amendment Regulation AB to the Mortgage Loan Sale and
         Servicing Agreement, dated as of January 26, 2006, by and among
         Countrywide Home Loans, Inc., Countrywide Home Loans Servicing LP
         and the Sponsor.

         Exhibit 31 Section 302 Certification.

         Exhibit 33.1 Wells Fargo Bank, N.A.'s, Annual Report on Assessment of
         Compliance for Year End December 31, 2006.

         Exhibit 33.2 Trustee's Annual Report on Assessment of Compliance for
         Year End December 31, 2006.

         Exhibit 33.3 Custodian's Annual Report on Assessment of Compliance for
         Year End December 31, 2006.

         Exhibit 34.1 Attestation Report on Assessment of Compliance with
         Servicing Criteria for Wells Fargo Bank, N.A.'s, Report (Exhibit 33.1)
         for Year End December 31, 2006.

         Exhibit 34.2 Attestation Report on Assessment of Compliance with
         Servicing Criteria for Trustee's Report (Exhibit 33.2) for Year End
         December 31, 2006.

         Exhibit 34.2 Attestation Report on Assessment of Compliance with
         Servicing Criteria for Custodian's Report (Exhibit 33.3) for Year End
         December 31, 2006.

         Exhibit 35.1 Wells Fargo Bank, N.A.'s Annual Statement of Compliance
         for Year End December 31, 2006.

     (b) See (a) above.

     (c) Not Applicable.








                                      SIGNATURE

          Pursuant to the requirements of Section 13 or 15(d) of the
          Securities Exchange Act of 1934, the registrant has duly caused
          this report to be signed on its behalf by the undersigned,
          thereunto duly authorized.


                             By: Morgan Stanley ABS Capital I Inc.,
                                 as Depositor

                                      By:  /s/ Steven Shapiro
                                           Steven Shapiro
                                           Vice President








     Date: March 30, 2007

     EXHIBIT INDEX

     Exhibit Document

       Exhibit 4.1 was filed as part of the Registrant's Current Report on
       Form 8-K filed on July 11, 2006 and is incorporated by reference:

      4.1 Pooling and Servicing Agreement, dated as of June 1, 2006, by and
          among the Depositor, as depositor, Wells Fargo Bank, National
          Association, as a servicer and a custodian, NC Capital Corporation,
          as a responsible party, WMC Mortgage Corp., as a responsible party,
          Decision One Mortgage Company, LLC, as a responsible party, LaSalle
          Bank National Association, as a custodian and Deutsche Bank National
          Trust Company, as trustee.

     Exhibit 4.1.2 was filed as part of the Registrant's Current Report on
     Form 8-K filed on December 1, 2006 and is incorporated by reference:

      4.1.2 Amendment No. 1 to the Pooling and Servicing Agreement, dated as
            of June 1, 2006, among Morgan Stanley ABS Capital I Inc.,as
            Depositor, Wells Fargo Bank, National Association, as Servicer and
            a Custodian, WMC Mortgage Corp., as a Responsible Party, Decision
            One Mortgage Company, LLC, as a Responsible Party, LaSalle Bank
            National Association, as a Custodian, and Deutsche Bank National
            Trust Company, as Trustee, relating to the Series 2006-HE4
            Certificates.

     Exhibits 10 were filed as part of the Registrant's Current Report on
     Form 8-K filed on July 11, 2006 and are incorporated by reference:

      10.1 Mortgage Loan Purchase and Warranties Agreement, dated as of April
           1, 2004 by and between WMC and the Sponsor (included as Exhibit O
           to Exhibit 4.1).

      10.2 Amendment No. 1, to the April 1, 2004 Mortgage Loan Purchase and
           Warranties Agreement, dated as of October 29, 2004, by and between
           WMC and the Sponsor (included as Exhibit O to Exhibit 4.1).

      10.3 Amendment No. 2, to the April 1, 2004 Mortgage Loan Purchase and
           Warranties Agreement, dated as of February 28, 2005, by and between
           WMC and the Sponsor (included as Exhibit O to Exhibit 4.1).

      10.4 Third Amended and Restated Mortgage Loan Purchase and Warranties
           Agreement, dated as of January 1, 2006, by and between WMC and
           the Sponsor (included as Exhibit O to Exhibit 4.1).

      10.5 The Third Amended and Restated Mortgage Loan Purchase  and
           Warranties Agreement, dated as of June 1, 2006, by and between
           Decision One and the Sponsor (included as Exhibit P to Exhibit 4.1).

      10.6 The Fifth Amended and Restated Mortgage Loan Purchase  and
           Warranties Agreement, dated as of March 1, 2006, by and between
           NC Capital and the Sponsor (included as Exhibit Q to Exhibit 4.1).

      10.7 The Flow Mortgage Loan Purchase and Warranties Agreement, dated as
           of September 1, 2004, by and between Option One and the Sponsor
          (included as Exhibit R to Exhibit 4.1).

      10.8 Amendment No. 1 to the September 1, 2004 Flow Mortgage Loan
           Purchase and Warranties Agreement , dated as of October 14, 2004,
           by and between Option One and the Sponsor (included as Exhibit R
           to Exhibit 4.1).

      10.9 Assignment and Recognition Agreement, dated as of June 23, among
           the Sponsor, the Depositor and Option One. (included as Exhibit R
           to Exhibit 4.1).

      10.10 ISDA Master Agreement, dated as of June 23, 2006, by and between
            Morgan Stanley Capital Services Inc., the swap provider, and
            Deutsche Bank National Trust Company, the trustee (included as
            part of Exhibit X to Exhibit 4.1).

      10.11 Schedule to the Master Agreement, dated as of June 23, 2006, by
            and between Morgan Stanley Capital Services Inc., the swap
            provider, and Deutsche Bank National Trust Company, the trustee
            (included as part of Exhibit X to Exhibit 4.1).

      10.12 Credit Support Annex, dated as of June 23, 2006, by and between
            Morgan Stanley Capital Services Inc., the swap provider, and
            Deutsche Bank National Trust Company, the trustee (included as
            part of Exhibit X to Exhibit 4.1).

      10.13 Confirmation, dated as of June 23, 2006, by and between Morgan
            Stanley Capital Services Inc., the swap provider, and Deutsche
            Bank National Trust Company, the trustee (included as part of
            Exhibit X to Exhibit 4.1).

      10.14 Guarantee, dated as of June 23, 2006, by Morgan Stanley included
            as part of Exhibit X to Exhibit 4.1).

      10.15 Servicing Agreement, dated as of June 23, 2006, among Countrywide
            Home Loans Servicing LP, the Depositor and the Trustee, (included
            as part of Exhibit Z to Exhibit 4.1).

      10.16 Mortgage Loan Sale and Servicing Agreement, dated as of October 1,
            2005, by and among Countrywide Home Loans, Inc., Countrywide
            Home Loans Servicing LP and the Sponsor.

      10.17 Amendment Regulation AB to the Mortgage Loan Sale and Servicing
            Agreement, dated as of January 26, 2006, by and among
            Countrywide Home Loans, Inc., Countrywide Home Loans Servicing LP
            and the Sponsor.

      31   Section 302 Certification.

      33.1 Wells Fargo Bank, N.A.'s, Annual Report on Assessment of
           Compliance for Year End December 31, 2006.

      33.2 Trustee's Annual Report on Assessment of Compliance for Year
           End December 31, 2006.

      33.3 Custodian's Annual Report on Assessment of Compliance for Year
           End December 31, 2006.

      34.1 Attestation Report on Assessment of Compliance with Servicing
           Criteria for Wells Fargo Bank, N.A.'s, Report (Exhibit 33.1)
           for Year End December 31, 2006.

      34.2 Attestation Report on Assessment of Compliance with Servicing
           Criteria for Trustee's Report (Exhibit 33.2) for Year End
           December 31, 2006.

      34.3 Attestation Report on Assessment of Compliance with Servicing
           Criteria for Custodian's Report (Exhibit 33.3) for Year End
           December 31, 2006.

      35.1 Wells Fargo Bank, N.A.'s, Annual Statement of Compliance for
           Year End December 31, 2006.