<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>3
<FILENAME>d05627exv99w1.txt
<DESCRIPTION>CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350
<TEXT>
<PAGE>


                                                                    EXHIBIT 99.1



                CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,
                      AS ADOPTED PURSUANT TO SECTION 906 OF
                         THE SARBANES-OXLEY ACT OF 2003

In connection with the Quarterly Report of Permian Basin Royalty Trust (the
"Trust") on Form 10-Q for the quarterly period ended March 31, 2003 as filed
with the Securities and Exchange Commission on the date hereof (the "Report"),
the undersigned, not in its individual capacity but solely as the trustee of the
Trust, certifies pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906
of the Sarbanes-Oxley Act of 2002, that to its knowledge:

         (1) The Report fully complies with the requirements of Section 13(a) or
15(d) of the Securities Exchange Act of 1934, as amended; and

         (2) The information contained in the Report fairly presents, in all
material respects, the financial condition and results of operations of the
Trust.





                                BANK OF AMERICA, N.A., TRUSTEE FOR
                                PERMIAN BASIN ROYALTY TRUST

Date: May 14, 2003              By:   /s/  Ron E. Hooper
                                      -----------------------------------------

                                      Ron E. Hooper,
                                      Senior Vice President, Royalty Management


A signed original of this written statement required by Section 906 has been
provided to Permian Basin Royalty Trust and will be retained by Permian Basin
Royalty Trust and furnished to the Securities and Exchange Commission or its
staff upon request.



</TEXT>
</DOCUMENT>
