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                                                                     EXHIBIT 4.4








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                      CERTIFICATE GUARANTY INSURANCE POLICY


OBLIGATIONS: Advanta Mortgage Loan Trust 1998-3,   POLICY NUMBER: 27585
             Mortgage Loan Asset-Backed Certificates, Series 1998-3,
             $500,000,000 Floating Rate Class A-1 Group I Certificates and
             $500,000,000 Floating Rate Class A-2 Group II Certificates
             (collectively, the "Obligations")

         MBIA Insurance Corporation (the "Certificate Insurer"), in
consideration of the payment of the premium and subject to the terms of this
Certificate Guaranty Insurance Policy (this "Policy"), hereby unconditionally
and irrevocably guarantees to any Owner that an amount equal to each full and
complete Insured Payment will be received by Bankers Trust Company of
California, N.A. or its successors, as trustee for the Owners (the "Trustee"),
on behalf of the Owners, from the Certificate Insurer, for distribution by the
Trustee to each Owner of each Owner's proportionate share of the Insured
Payment. The Certificate Insurer's obligations hereunder with respect to a
particular Insured Payment shall be discharged to the extent funds equal to the
applicable Insured Payment are received by the Trustee, whether or not such
funds are properly applied by the Trustee. Insured Payments shall be made only
at the time set forth in this Policy and no accelerated Insured Payments shall
be made regardless of any acceleration of the Obligations, unless such
acceleration is at the sole option of the Certificate Insurer.

         Notwithstanding the foregoing paragraph, this Policy does not cover
shortfalls, if any, attributable to the liability of the Trust, any REMIC, or
the Trustee for withholding taxes, if any (including interest and penalties in
respect of any such liability). This Policy does not cover, and Insured Payments
do not include, any Civil Relief Act Shortfalls, or any Class A-1 Supplemental
Interest Amounts or Class A-2 Supplemental Interest Amounts.

         The Certificate Insurer will pay any Insured Payment that is a
Preference Amount on the Business Day following receipt on a Business Day by the
Fiscal Agent (as described below) of (i) a certified copy of the order requiring
the return of such a preference payment, (ii) an opinion of counsel satisfactory
to the Certificate Insurer that such order is final and not subject to appeal,
(iii) an assignment in such form as is reasonably required by the Certificate
Insurer, irrevocably assigning to the Certificate Insurer all rights and claims
of the Owner relating to or arising under the Obligations against the debtor
which made such preference payment or otherwise with respect to such preference
payment and (iv) appropriate instruments to effect the appointment of the
Certificate Insurer as agent for such Owner in any legal proceeding related to
such preference payment, such instruments being in a form satisfactory to the
Certificate Insurer, provided that if such documents are received after 12:00
noon New York City time on such Business Day, they will be deemed to be received
on the following Business Day. Such payments shall be disbursed to the receiver
or trustee in bankruptcy named in the final order of the court exercising
jurisdiction on behalf of the Owner and not to any Owner directly unless such
Owner has returned principal or interest paid on the Obligations to such
receiver or trustee in bankruptcy, in which case such payment shall be disbursed
to such Owner.

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         The Certificate Insurer will pay any other amount payable hereunder no
later than 12:00 noon New York City time on the later of the Payment Date on
which the related Deficiency Amount is due or the third Business Day following
receipt in New York, New York on a Business Day by State Street Bank and Trust
Company, N.A., as Fiscal Agent for the Certificate Insurer or any successor
fiscal agent appointed by the Certificate Insurer (the "Fiscal Agent") of a
Notice (as described below); provided that if such Notice is received after
12:00 noon New York City time on such Business Day, it will be deemed to be
received on the following Business Day. If any such Notice received by the
Fiscal Agent is not in proper form or is otherwise insufficient for the purpose
of making claim hereunder it shall be deemed not to have been received by the
Fiscal Agent for purposes of this paragraph, and the Certificate Insurer or the
Fiscal Agent, as the case may be, shall promptly so advise the Trustee and the
Trustee may submit an amended Notice.


         Insured Payments due hereunder unless otherwise stated herein will be
disbursed by the Fiscal Agent to the Trustee on behalf of the Owners by wire
transfer of immediately available funds in the amount of the Insured Payment
less, in respect of Insured Payments related to Preference Amounts, any amount
held by the Trustee for the payment of such Insured Payment and legally
available therefor.

         The Fiscal Agent is the agent of the Certificate Insurer only and the
Fiscal Agent shall in no event be liable to Owners for any acts of the Fiscal
Agent or any failure of the Certificate Insurer to deposit or cause to be
deposited, sufficient funds to make payments due under this Policy.

         As used herein, the following terms shall have the following meanings:

         "Agreement" means the Pooling and Servicing Agreement, dated as of
September 1, 1998, among Advanta Mortgage Corp. USA, as Master Servicer, Advanta
Mortgage Conduit Services, Inc., as Sponsor, and Bankers Trust Company of
California, N.A., as Trustee, without regard to any amendment or supplement
thereto.

         "Applied Realized Loss Amount" means the sum of the Group I
Subordination Deficit and the Group II Subordination Deficit.

         "Business Day" means any day other than (i) a Saturday or Sunday or
(ii) a day on which the Certificate Insurer is closed or banking institutions in
the State of New York, the State of California or the city in which the
principal corporate trust office of the Trustee under the Agreement is located,
are authorized or obligated by law or executive order to be closed.

         "Deficiency Amount" means the excess, if any, of Required Distributions
over the Net Available Distribution Amount.


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         "Insured Payment" means (i) as of any Payment Date, any Deficiency
Amount and (ii) any Preference Amount (without duplication).

         "Net Available Distribution Amount" means the sum of the Group I Total
Available Funds and the Group II Total Available Funds.

         "Notice" means the telephonic or telegraphic notice, promptly confirmed
in writing by fax substantially in the form of Exhibit A attached hereto, the
original of which is subsequently delivered by registered or certified mail,
from the Trustee specifying the Insured Payment which shall be due and owing on
the applicable Payment Date.

         "Owner" means each Owner (as defined in the Agreement) who, on the
applicable Payment Date, is entitled under the terms of the applicable
Obligations to payment thereunder.

         "Preference Amount" means any amount previously distributed to an Owner
on the Obligations that is recoverable and sought to be recovered as a voidable
preference by a trustee in bankruptcy pursuant to the United States Bankruptcy
Code (11 U.S.C.), as amended from time to time, in accordance with a final
nonappealable order of a court having competent jurisdiction.

         "Required Distributions" means, as of any Payment Date, the sum of (i)
the Class A-1 Current Interest and the Class A-2 Current Interest, (ii) any
Class A-1 Interest Carry Forward Amount and any Class A-2 Interest Carry Forward
Amount and (iii) any Applied Realized Loss Amount as of such Payment Date.

         Capitalized terms used herein and not otherwise defined herein shall
have the respective meanings set forth in the Agreement as of the date of
execution of this Policy, without giving effect to any subsequent amendment to
or modification of the Agreement unless such amendment or modification has been
approved in writing by the Certificate Insurer.

         Any notice hereunder or service of process on the Fiscal Agent may be
made at the address listed below for the Fiscal Agent or such other address as
the Certificate Insurer shall specify in writing to the Trustee.

         The notice address of the Fiscal Agent is 15th Floor, 61 Broadway, New
York, New York 10006 Attention: Municipal Registrar and Paying Agency or such
other address as the Fiscal Agent shall specify to the Trustee in writing.

         THIS POLICY IS BEING ISSUED UNDER AND PURSUANT TO, AND SHALL BE
CONSTRUED UNDER, THE LAWS OF THE STATE OF NEW YORK, WITHOUT GIVING EFFECT TO THE
CONFLICT OF LAWS PRINCIPLES THEREOF.

         The insurance provided by this Policy is not covered by the
Property/Casualty Insurance Security Fund specified in Article 76 of the New
York Insurance Law.


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         This Policy is not cancelable for any reason. The premium on this
Policy is not refundable for any reason including payment, or provision being
made for payment, prior to maturity of the Obligations.

         IN WITNESS WHEREOF, the Certificate Insurer has caused this Policy to
be executed and attested this 23rd day of September, 1998.

                                       MBIA INSURANCE CORPORATION



                                       /s/ Richard Weill
                                       ---------------------------------
                                       President


                               Attest: /s/ ILLEGIBLE
                                       ---------------------------------
                                       Assistant Secretary


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                                    EXHIBIT A

                    TO CERTIFICATE GUARANTY INSURANCE POLICY
                                  NUMBER: 27585

                        NOTICE UNDER CERTIFICATE GUARANTY
                         INSURANCE POLICY NUMBER: 27585



State Street Bank and Trust Company, N.A., as Fiscal Agent
  for MBIA Insurance Corporation
61 Broadway, 15th Floor
New York, NY  10006
Attention: Municipal Registrar and
               Paying Agency

MBIA Insurance Corporation
113 King Street
Armonk, NY  10504

         The undersigned, a duly authorized officer of [NAME OF TRUSTEE], as
trustee (the "Trustee"), hereby certifies to State Street Bank and Trust
Company, N.A. (the "Fiscal Agent") and MBIA Insurance Corporation (the
"Certificate Insurer"), with reference to Certificate Guaranty Insurance Policy
Number: 27585 (the "Policy") issued by the Certificate Insurer in respect of the
Advanta Mortgage Loan Trust 1998-3, Mortgage Loan Asset-Backed Certificates,
Series 1998-3, $500,000,000 Floating Rate Class A-1 Group I Certificates and
$500,000,000 Floating Rate Class A-2 Group II Certificates.

                  (i) the Trustee is the trustee under the Pooling and Servicing
         Agreement dated as of September 1, 1998 among Advanta Mortgage Corp.
         USA, as Master Servicer, Advanta Mortgage Conduit Services, Inc., as
         Sponsor, and the Trustee, as trustee for the Owners;

                  (ii) the amount due under the definition of Deficiency Amount
         for the Payment Date occurring on       (the "Applicable Payment Date")
         is $       (the "Deficiency Amount");

                  (iii) the amount of previously distributed payments on the
         Obligations that is recoverable and sought to be recovered as a
         voidable preference by a trustee in bankruptcy pursuant to the
         Bankruptcy Code in accordance with a final nonappealable order of a
         court having competent jurisdiction is $       (the "Preference 
         Amount");
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                  (iv) the total Insured Payment due is $       , which amount 
         equals the sum of the Deficiency Amount and the Preference Amount;

                  (v) the Trustee is making a claim under and pursuant to the
         terms of the Policy for the dollar amount of the Insured Payment set
         forth in (ii) above to be applied to the payment of the Deficiency
         Amount for the Applicable Payment Date in accordance with the Agreement
         and for the dollar amount of the Insured Payment set forth in (iii)
         above to be applied to the payment of any Preference Amount; and

                  (vi) the Trustee directs that payment of the Insured Payment
         be made to the following account by bank wire transfer of federal or
         other immediately available funds in accordance with the terms of the
         Policy: [TRUSTEE'S ACCOUNT NUMBER].

         Any capitalized term used in this Notice and not otherwise defined
herein shall have the meaning assigned thereto in the Policy.

         Any Person Who Knowingly And With Intent To Defraud Any Insurance
Company Or Other Person Files An Application For Insurance Or Statement Of Claim
Containing Any Materially False Information, Or Conceals For The Purpose Of
Misleading, Information Concerning Any Fact Material Thereto, Commits A
Fraudulent Insurance Act, Which Is A Crime, And Shall Also Be Subject To A Civil
Penalty Not To Exceed Five Thousand Dollars And The Stated Value Of The Claim
For Each Such Violation.

         IN WITNESS WHEREOF, the Trustee has executed and delivered this Notice
under the Policy as of the    day of      ,     .

                                       [NAME OF TRUSTEE], as Trustee


                                       By ________________________________
                                       Title _____________________________


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