Exhibit 99.1

National City(R)                          National City Home Loan Services, Inc.
                                          P.O. Box 1838
                                          Pittsburgh, PA 15230-1838

                         FORM OF COMPLIANCE CERTIFICATE

First Franklin Mortgage Loan Trust 2005-FFA
Asset-Backed Certificates, Series 2005-FFA

      I, Steven A. Baranet, hereby certify that I am a duly appointed Vice
President of National City Home Loan Services, Inc. (the "Servicer"), and
further certify as follows:

      1.    This certification is being made pursuant to the terms of the
            Pooling and Servicing Agreement, dated as of July 1, 2005, (the
            "Agreement"), among GS Mortgage Securities Corp., as depositor,
            National City Home Loan Services, Inc., as servicer and Deutsch Bank
            National Trust as trustee.

      2.    I have reviewed the activities of the Servicer during the preceding
            year and the Servicer's performance under the Agreement and to the
            best of my knowledge, based on such review, the Servicer has
            fulfilled all of its obligations under the Agreement throughout the
            year.

      Capitalized terms not otherwise defined herein have the meanings set forth
      in the Agreement.

      Date: 3/16/06

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National City Home Loan Services, Inc. is a subsidiary of National City Bank of
Indiana. First Franklin and NationPoint are divisions of National City Bank of
Indiana, which is a wholly-owned subsidiary of National City Corporation.
National City Home Loan Services, Inc. services loans for the following
affiliated entities as First Franklin Loan Services, National City Loan Services
and NationPoint:

National City Bank
National City Bank of Indiana
National City Bank of Kentucky
National City Bank of the Midwest
National City Bank of Pennsylvania
NationPoint
First Franklin Financial Corporation
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National City(R)                          National City Home Loan Services, Inc.
                                          P.O. Box 1838
                                          Pittsburgh, PA 15230-1838



In WITNESS WHEREOF, the undersigned has executed this certificate as of March
16, 2006

                                    By: /s/ Steven A. Baranet
                                        ---------------------
                                    Name: Steven A. Baranet
                                    Title: Vice President

      I, Timothy C. Lulich, a Senior Vice President of the Servicer, hereby
certify that Steven A. Baranet is a duly elected, qualified, and acting Vice
President of the Servicer and that the signature appearing above is his genuine
signature.

      IN WITNESS WHEREOF, the undersigned has executed this Certificate as of
March 16, 2006

                                    By: /s/ Timothy C. Lulich
                                        ---------------------
                                    Name: Timothy C. Lulich
                                    Title: Senior Vice President

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National City Home Loan Services, Inc. is a subsidiary of National City Bank of
Indiana. First Franklin and NationPoint are divisions of National City Bank of
Indiana, which is a wholly-owned subsidiary of National City Corporation.
National City Home Loan Services, Inc. services loans for the following
affiliated entities as First Franklin Loan Services, National City Loan Services
and NationPoint:

National City Bank
National City Bank of Indiana
National City Bank of Kentucky
National City Bank of the Midwest
National City Bank of Pennsylvania
NationPoint
First Franklin Financial Corporation
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                                                                      [LOGO]
                                                                   EQUAL HOUSING
                                                                      LENDER