Exhibit 25.1

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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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                                    FORM T-1

                         STATEMENT OF ELIGIBILITY UNDER
                      THE TRUST INDENTURE ACT OF 1939 OF A
                    CORPORATION DESIGNATED TO ACT AS TRUSTEE
               Check if an Application to Determine Eligibility of
                   a Trustee Pursuant to Section 305(b)(2)___
                            -------------------------

                      U.S. BANK TRUST NATIONAL ASSOCIATION
               (Exact name of Trustee as specified in its charter)

                                   41-1973763
                       I.R.S. Employer Identification No.


  300 EAST DELAWARE AVENUE, 8TH FLOOR
       WILMINGTON, DELAWARE                                 19801
(Address of principal executive offices)                  (Zip Code)


                                David Kolibachuk
                      U.S. Bank Trust National Association
                           100 Wall Street, Suite 1600
                               New York, NY 10005
                            Telephone (212) 361-2459
            (Name, address and telephone number of agent for service)

                                     UBS AG
               (Exact name of obligor as specified in its charter)

SWITZERLAND                                               98-0186363
(State or other jurisdiction of                           (I. R. S. Employer
incorporation or organization)                            Identification No.)

BAHNHOFSTRASSE 45
ZURICH, SWITZERLAND
(Address of principal executive offices)                  (Zip Code)

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                                 DEBT SECURITIES

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                                    FORM T-1


ITEM 1. GENERAL INFORMATION. Furnish the following information as to the
        Trustee.

      a)    Name and address of each examining or supervising authority to which
            it is subject.

                 Comptroller of the Currency
                 Washington, D.C.

      b)    Whether it is authorized to exercise corporate trust powers.

                 Yes

ITEM 2. AFFILIATIONS WITH OBLIGOR. If the obligor is an affiliate of the
        Trustee, describe each such affiliation.

            None

ITEMS 3-15  Not applicable because, to the best of Trustee's knowledge, the
            Trustee is not a trustee under any other indenture under which any
            other securities or certificates of interest or participation in any
            other securities of the obligor are outstanding and there is not,
            nor has there been, a default with respect to securities issued
            under this indenture.


Item 16. LIST OF EXHIBITS: List below all exhibits filed as a part of
            this statement of eligibility and qualification.

      1.    A copy of the Articles of Association of the Trustee now in effect,
            incorporated herein by reference to Exhibit 1 of Form T-1, Document
            6 of Registration No. 333-84320.

      2.    A copy of the certificate of authority of the Trustee to commence
            business, incorporated herein by reference to Exhibit 2 of Form T-1,
            Document 6 of Registration No. 333-84320.

      3.    A copy of the certificate of authority of the Trustee to exercise
            corporate trust powers, incorporated herein by reference to Exhibit
            3 of Form T-1, Document 6 of Registration No. 333-84320.

      4.    A copy of the existing bylaws of the Trustee, as now in effect,
            incorporated herein by reference to Exhibit 4 of Form T-1, Document
            6 of Registration No. 333-113995.

      5.    Not applicable.

      6.    The consent of the Trustee required by Section 321(b) of the Trust
            Indenture Act of 1939, incorporated herein by reference to Exhibit 6
            of Form T-1, Document 6 of Registration No. 333-84320.

      7.    Report of Condition of the Trustee as of September 30, 2005,
            published pursuant to law or the requirements of its supervising or
            examining authority, attached as Exhibit 7.

      8.    Not applicable.

      9.    Not applicable.


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                                    SIGNATURE

Pursuant to the requirements of the Trust Indenture Act of 1939, as amended, the
Trustee, U.S. BANK TRUST NATIONAL ASSOCIATION, a national banking association
organized and existing under the laws of the United States of America, has duly
caused this statement of eligibility and qualification to be signed on its
behalf by the undersigned, thereunto duly authorized, all in the City of New
York, State of New York on the 22nd day of March, 2006.

                                          U.S. BANK TRUST NATIONAL ASSOCIATION

                                          By:    /s/ David Kolibachuk
                                          Name:  David Kolibachuk
                                          Title: Vice President


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EXHIBIT 7

                      U.S. BANK TRUST NATIONAL ASSOCIATION
                        STATEMENT OF FINANCIAL CONDITION
                            AS OF SEPTEMBER 30, 2005

                                    ($000'S)



                                                             9/30/2005
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ASSETS

      Cash and Balances Due From Depository Institutions      $411,608
      Fixed Assets                                                 171
      Intangible Assets                                         99,614
      Other Assets                                              31,707
                                                              --------
           TOTAL ASSETS                                       $543,100


LIABILITIES

      Other Liabilities                                        $15,800
                                                              --------
      TOTAL LIABILITIES                                        $15,800

EQUITY

      Common and Preferred Stock                                $1,000
      Surplus                                                  505,932
      Undivided Profits                                         20,368
                                                              --------
           TOTAL EQUITY CAPITAL                               $527,300

TOTAL LIABILITIES AND EQUITY CAPITAL                          $543,100

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To the best of the undersigned's determination, as of this date the above
financial information is true and correct.

U.S. Bank Trust National Association

By:         /s/ David Kolibachuk
           Name: David Kolibachuk
           Title: Vice President

Date:  March 22, 2006


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