EX-33 (f)
Certification Regarding Compliance with Applicable Servicing Criteria

1. Morgan Stanley Credit Corporation, as Servicer, is responsible for assessing
   its compliance with the applicable servicing criteria applicable, for the
   year ended December 31, 2006, under paragraph (d) of Item 1122 of Regulation
   AB. Such assessment is set forth herein in connection with asset-backed
   securities transactions (Morgan Stanley Mortgage Trust MSM 2006-3AR, MSM
   2006-5AR, MSM 2006- 6AR, MSM 2006-7, MSM 2006-8AR and MSM 2006-11) subject to
   Regulation AB, ("the Transactions") involving residential mortgage loans.

2. Except as set forth in paragraph 3 below, Morgan Stanley Credit Corporation
   used the criteria set forth in paragraph (d) of Item 1122 of Regulation AB to
   assess the compliance with the applicable servicing criteria;

3. The criteria described as such on Exhibit A hereto are inapplicable to Morgan
   Stanley Credit Corporation based on the activities it performs with respect
   to asset-backed securities transactions involving residential mortgage loans;

4. Morgan Stanley Credit Corporation has complied, in all material respects,
   with the applicable servicing criteria as of and for the year ended December
   31, 2006.

5. Deloitte & Touche LLP, an independent registered public accounting firm, has
   issued an attestation report on Morgan Stanley Credit Corporation assessment
   of compliance with the applicable servicing criteria as of and for the year
   ended December 31, 2006.

March 12, 2007

Morgan Stanley Credit Corporation

/s/ John Schmitz
Senior Vice President


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APPENDIX A



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<CAPTION>

                             SERVICING CRITERIA
<S>                                                              <C>
                                                                 Performed       INAPPLICABLE
                                                                  Directly         SERVICING
                                                                    by              CRITERIA
Reference                        Criteria                          MSCC

                   General Servicing Considerations

1122(d)(1)(i)    - Policies and procedures are instituted            X
                   to monitor any performance or other
                   triggers and events of default in
                   accordance with the transaction
                   agreements.

1122(d)(1)(ii)   - If any material servicing activities                                 X
                   are outsourced to third parties, policies
                   and procedures are instituted to monitor
                   the third party's performance and
                   compliance with such servicing
                   activities.


1122(d)(1)(iii)  - Any requirements in the transaction                                  X
                   agreements to maintain a back-up servicer
                   for the pool assets are maintained.

1122(d)(1)(iv)   - A fidelity bond and errors and                    X
                   omissions policy is in effect on the
                   party participating in the servicing
                   function throughout the reporting period
                   in the amount of coverage required by and
                   otherwise in accordance with the terms of
                   the transaction agreements.

                   Cash Collection and Administration

1122(d)(2)(i)    - Payments on pool assets are deposited             X
                   into the appropriate custodial bank
                   accounts and related bank clearing
                   accounts no more than two business days
                   of receipt, or such other number
                   of days specified in the transaction
                   agreements.

1122(d)(2)(ii)   - Disbursements made via wire transfer on           X
                   behalf of an obligor or to an investor
                   are made only by authorized personnel.

1122(d)(2)(iii)  - Advances of funds or guarantees                   X
                   regarding collections, cash flows or
                   distributions, and any interest or other
                   fees charged for such advances, are made,
                   reviewed, and approved as specified in
                   the transaction agreements.

1122(d)(2)(iv)   - The related accounts for the                                         X
                   transaction, such as cash reserve
                   accounts or accounts established as a
                   form of overcollateralization, are
                   separately maintained (e.g., with respect
                   to commingling of cash) as set forth in
                   the transaction agreements.

1122(d)(2)(v)    - Each custodial account is maintained at           X
                   a federally insured depository
                   institution as set forth in the
                   transaction agreements. For purposes of
                   this criterion, "federally insured
                   depository institution" with respect to a
                   foreign financial institution means a
                   foreign financial institution that meets
                   the requirements of Section 240.13k-1(b)(1)
                   of this chapter.

1122(d)(2)(vi)   - Unissued checks are safeguarded so as                                X
                   to prevent unauthorized access.

1122(d)(2)(vii)  - Reconciliations are prepared on a
                   monthly basis for all asset-backed
                   securities related bank accounts,
                   including custodial accounts and related
                   bank clearing accounts. These
                   reconciliations:
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                   (A) Are mathematically accurate;                  X
                   (B) Are prepared within 30                        X
                   calendar days after the bank statement
                   cutoff date, or such other number of days
                   specified in the transaction agreements;
                   (C) Are reviewed and approved by someone          X
                   other than the person who prepared the
                   reconciliation; and
                   (D) Contain explanations for reconciling          X
                   items. These reconciling items are
                   resolved within 90 calendar days of
                   their original identification, or such
                   other number of days specified in the
                   transaction agreements.

                   Investor Remittances and Reporting

1122(d)(3)(i)    - Reports to investors, including those
                   to be filed with the Commission, are
                   maintained in accordance with the
                   transaction agreements and applicable
                   Commission requirements. Specifically,
                   such reports:
                   (A) Are prepared in accordance with               X
                   timeframes and other terms set forth in
                   the transaction agreements;
                   (B) Provide information calculated in             X
                   accordance with the terms specified in
                   the transaction agreements;
                   (C) Are filed with the Commission as                                 X
                   required by its rules and regulations;
                   and
                   (D) Agree with investors' or the                  X
                   trustee's records as to the total unpaid
                   principal balance and number of pool
                   assets serviced by the servicer.

1122(d)(3)(ii)   - Amounts due to investors are allocated            X
                   and remitted in accordance with
                   timeframes, distribution priority and
                   other terms set forth in the transaction
                   agreements.

1122(d)(3)(iii)  - Disbursements made to an investor are             X
                   posted within two business days to the
                   servicer's investor records, or such other
                   number of days specified in the transaction
                   agreements.

1122(d)(3)(iv)   - Amounts remitted to investors per the             X
                   investor reports agree with cancelled
                   checks, or other form of payment, or
                   custodial bank statements.

                   Pool Asset Administration

1122(d)(4)(i)    - Collateral or security on pool assets             X
                   is maintained as required by the
                   transaction agreements or related pool
                   asset documents.

1122(d)(4)(ii)   - Pool assets and related documents are             X
                   safeguarded as required by the
                   transaction agreements.

1122(d)(4)(iii)  - Any additions, removals, or                       X
                   substitutions to the asset pool are made,
                   reviewed, and approved in accordance with
                   any conditions or requirements in the
                   transaction agreements.

1122(d)(4)(iv)   - Payments on pool assets, including any            X
                   payoffs, made in accordance with the
                   related pool asset documents are posted
                   to the applicable servicer's obligor
                   records maintained no more than two
                   business days after receipt, or such
                   other number of days specified in the
                   transaction agreements, and allocated to
                   principal, interest, or other

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                   items (e.g., escrow) in accordance
                   with the related pool asset documents.

1122(d)(4)(v)    - The servicer's records regarding the              X
                   pool assets agree with the servicer's
                   records with respect to an obligor's
                   unpaid principal balance.

1122(d)(4)(vi)   - Changes with respect to the terms or              X
                   status of an obligor's pool asset (e.g.,
                   loan modifications or re-agings) are
                   made, reviewed and approved by authorized
                   personnel in accordance with the
                   transaction agreements and related pool
                   asset documents.

1122(d)(4)(vii)  - Loss mitigation or recovery actions               X
                   (e.g., forbearance plans, modifications
                   and deeds in lieu of foreclosure,
                   foreclosures and repossessions, as
                   applicable) are initiated, conducted, and
                   concluded in accordance with
                   the timeframes or other requirements
                   established by the transaction
                   agreements.

1122(d)(4)(viii) - Records documenting collection efforts            X
                   are maintained during the period a pool
                   asset is delinquent in accordance with
                   the transaction agreements. Such records
                   are maintained on at least a monthly
                   basis, or such other period specified in
                   the transaction agreements, and describe
                   the entity's activities in monitoring
                   delinquent pool assets including, for
                   example, phone calls, letters, and
                   payment rescheduling plans in cases where
                   delinquency is deemed temporary (e.g.,
                   illness or unemployment).

1122(d)(4)(ix)   - Adjustments to interest rates or rates            X
                   of return for pool assets with variable
                   rates are computed based on the related
                   pool asset documents.

1122(d)(4)(x)    - Regarding any funds held in trust for
                   an obligor (such as escrow accounts):
                   (A) Such funds are analyzed, in                                      X
                   accordance with the obligor's pool asset
                   documents, on at least an annual basis,
                   or such other period specified in the
                   transaction agreements;
                   (B) Interest on such funds is paid, or                               X
                   credited, to obligors in accordance with
                   applicable pool asset documents and
                   state laws; and
                   (C) Such funds are returned to the                                   X
                   obligor within 30 calendar days of full
                   repayment of the related pool asset, or
                   such other number of days specified in
                   the transaction agreements.

1122(d)(4)(xi)   - Payments made on behalf of an obligor                                X
                   (such as tax or insurance payments) are
                   made on or before the related penalty or
                   expiration dates, as indicated on the
                   appropriate bills or notices for such
                   payments, provided that such support has
                   been received by the servicer at least 30
                   calendar days prior to these dates, or
                   such other number of days specified in
                   the transaction agreements.

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1122(d)(4)(xii)  - Any late payment penalties in                                        X
                   connection with any payment to be made on
                   behalf of an obligor are paid from the
                   servicer's funds and not charged to the
                   obligor, unless the late payment was due
                   to the obligor's error or omission.

1122(d)(4)(xiii) - Disbursements made on behalf of an                                   X
                   obligor are posted within two business
                   days to the obligor's records maintained
                   by the servicer, or such other number of
                   days specified in the transaction
                   agreements.

1122(d)(4)(xiv)  - Delinquencies, charge-offs, and                   X
                   uncollectible accounts are recognized and
                   recorded in accordance with the
                   transaction agreements.

1122(d)(4)(xv)   - Any external enhancement or other                                    X
                   support identified in Item
                   1114(a)(1) through (3) or Item 1115 of
                   this Regulation AB, is maintained as set
                   forth in the transaction agreements.

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