SECURITIES AND EXCHANGE COMMISSION

                                Washington, D.C.



                                    FORM 8-K

                                 CURRENT REPORT


     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934



         Date of Report (Date of earliest event reported): July 30, 2002



                                   AAON, INC.
                                   ----------
             (Exact name of registrant as specified in its charter)



           Nevada                    33-18336-LA                  87-0448736
           ------                    -----------                  ----------
(State or other jurisdiction         (Commission                (IRS Employer
      of incorporation)              File Number)            Identification No.)



                     2425 South Yukon, Tulsa, Oklahoma 74107
                    (Address of principal executive offices)


       Registrant's telephone number, including area code: (918) 583-2266

                                      (1)


Item 5.   Other Events.
          ------------

          Registrant executed the Eighth Amendment to Second Restated Revolving
          Credit Loan Agreement on September 4, 2001.


Item 7.   Financial Statements and Exhibits.
          ---------------------------------

          (c)  A copy of the Eighth Amendment to Second Restated Revolving
               Credit Loan Agreement is filed herewith as Exhibit 1.


                                   SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                       AAON, INC.



Date:  August 19, 2002                 By:  /s/ John B. Johnson, Jr.
                                            ------------------------------------
                                                John B. Johnson, Jr., Secretary

                                      (2)


                                    Exhibit 1


                               EIGHTH AMENDMENT TO
                 SECOND RESTATED REVOLVING CREDIT LOAN AGREEMENT

         This Eighth Amendment to Second Restated Revolving Credit Loan
Agreement ("Amendment") is made and entered into effective this 30th day of
July, 2002, by and among AAON, INC., an Oklahoma corporation, and AAON COIL
PRODUCTS, INC., a Texas corporation (formerly known as CP/Aaon, Inc.)
(separately and collectively, the "Borrower"), and BANK OF OKLAHOMA, NATIONAL
ASSOCIATION ("Bank").

                                    RECITALS
                                    --------
         A.  Reference is made to the Second Restated Revolving Credit Loan
Agreement dated effective July 1, 1996, which was amended by the Amendment One
dated June 30, 1997, the Amendment Two dated effective June 30, 1998, the Third
Amendment dated September 9, 1999, the Fourth Amendment dated November 9, 1999,
the Fifth Amendment dated July 27, 2000, the Sixth Amendment dated July 30,
2001, and the Seventh Amendment dated September 4, 2001, all between Borrower
and Bank (as amended, the "Credit Agreement"), pursuant to which currently
exists a $15,150,000 Revolving Line committed through July 30, 2002. Terms used
herein shall have the meanings given in the Credit Agreement, unless otherwise
defined herein.

         B.  Borrower has requested Bank to extend the maturity date of the
$15,150,000 Revolving Line to July 30, 2003; and Bank has agreed to accommodate
such request, subject to the terms and conditions set forth below:

                                    AGREEMENT
                                    ---------
          For valuable consideration received, it is agreed as follows:

          1. Amendments to Credit. The Credit Agreement is hereby amended as
     follows:


               1.1 Section 1.52 (Termination Date) is hereby amended to evidence
          that the date "July 30, 2002" shall now mean and read "July 30, 2003."

               1.2 Section 6.17 ($2,500,000 Term Loan) is hereby deleted.

          2. Conditions for the Amendment to the $15,150,000 Revolving Line. As
     a condition for the Amendment to the $15,150,000 Revolving Line, the
     following shall be satisfied:

               2.1 Borrower shall execute and deliver to Bank a $15,150,000
          Promissory Note in form and content as set forth in Schedule "2.1"
          attached hereto, which constitutes a modification of the $15,150,000
          Promissory Note dated effective July 31, 2001.

               2.2 Borrower hereby represents and certifies to Bank that (i) no
          Initial Default or Matured Default exists under the Credit Agreement,
          and all representations and warranties set forth therein remain true
          and correct in all material respects as of the date hereof, and (ii)
          all schedules attached the Credit Agreement remain true and correct.

                                      (3)



          3. Ratification of Documents. Borrower hereby ratifies and confirms
     the Credit Agreement and the Note, and agrees that they remain in full
     force and effect, enforceable in accordance with their terms.

          4. Ratification of Guaranty. Aaon, Inc., a Nevada corporation, hereby
     ratifies and confirms the Guaranty Agreement dated effective July 1, 1996,
     and acknowledges and agrees that the Guaranty shall remain in full force
     and effect notwithstanding the amendments to the Credit Agreement in
     Section 1, above.

          5. Binding Effect. This Amendment shall be governed by and construed
     in accordance with the laws of the State of Oklahoma, and shall inure to
     the benefit of the parties hereto, their successors and assigns.

          6. Costs, Expenses and Fees. Borrower hereby agrees to pay the
     reasonable costs, expenses and fees of Bank incurred in connection with the
     preparation of this document and all related instruments, documents and
     agreements.

                                       "Bank"

                                       BANK OF OKLAHOMA, NATIONAL
                                       ASSOCIATION



                                       By /s/ Pamela J. Amburgy
                                          -------------------------------------
                                              Pamela J. Amburgy, Vice President

                                       "Borrower"

                                       AAON, INC., an Oklahoma corporation



                                       By: /s/ Norman H. Asbjornson
                                           ------------------------------------
                                               Norman H. Asbjornson, President

                                      (4)


                                 Schedule "2.1"

                       ($15,150,000 Revolving Credit Note)

                                      (5)



                                 PROMISSORY NOTE


$15,150,000                                       Effective Date:  July 30, 2002
                                                                 Tulsa, Oklahoma


     FOR VALUE RECEIVED, the undersigned, AAON, INC., AN Oklahoma corporation
and AAON COIL PRODUCTS, INC., a Texas corporation (formerly known as CP/AAON,
Inc.) (separately and collectively "Maker"), jointly and severally promise to
pay to the order of BANK OF OKLAHOMA, NATIONAL ASSOCIATION ("Lender"), at its
offices in Tulsa, Oklahoma, the principal sum of FIFTEEN MILLION ONE HUNDRED
FIFTY THOUSAND DOLLARS ($15,150,000), or, if less, the aggregate sum of advances
made by Lender to Maker under the Second Restated Revolving Credit Agreement
dated July 1, 1996, as amended ("Credit Agreement"), as follows:

          a.   Principal. Principal shall be payable on July 30, 2003.


          b.   Interest. Interest shall be payable on the last day of each month
               (except for interest on LIBOR Loans which shall be payable on the
               last day of the applicable Interest Period) and at maturity,
               commencing August 31, 2002, based upon the type of loan and
               interest rate related thereto as more specifically described in
               the Credit Agreement, which terms are incorporated herein by
               reference.

     This Note is the "Note" referred to in the Credit Agreement. Reference is
made to the Credit Agreement for provisions for interest accrual, the interest
rate, the payment and prepayment hereof and for the acceleration of the maturity
hereof, all of which are incorporated herein and made a part hereof. Terms
defined in said Credit Agreement are used herein as therein defined.

     All payments under this Note shall be made in legal tender of the United
States of America or in other immediately available funds at Lender's office
described above, and no credit shall be given for any payment received by check,
draft of other instrument or item until such time as the holder hereof shall
have received credit therefor from the holder's collecting agent or, in the
event no collecting agent is used, from the bank or other financial institution
upon which said check, draft or other instrument or item is drawn.

     From time to time the maturity date of this Note may be extended or this
Note may be renewed, in whole or in part, or a new note of different form may be
substituted for this Note and/or the rate of interest may be changed, or changes
may be made in consideration of loan extensions, and the holder, from time to
time, may waive or surrender, either in whole or in part, any rights,
guarantees, security interests or liens given for the benefit of the holder in
connection herewith; but no such occurrences shall in any manner affect, limit,
modify or otherwise impair any rights, guarantees or security of the holder not
specifically waived, released or surrendered in writing, nor shall any maker,
guarantor, endorser or any person who is or might be liable hereon, either
primarily person who might be liable hereon; and such release shall not affect
or discharge the liability of any other person who is or might be liable hereon.

                                      (6)


     The Maker and any endorsers, guarantors and sureties hereby severally waive
protest, presentment, demand, and notice of protest and nonpayment in case this
Note or any payment due hereunder is not paid when due; and they agree to any
renewal, extension, acceleration, postponement of the time of payment,
substitution, exchange or release of collateral and to the release of any party
or person primarily or contingently liable without prejudice to the holder and
without notice to the Maker or any endorser, guarantor or surety. Maker and any
guarantor, endorser, surety or any other person who is or may become liable
hereon will, on demand, pay all costs of collection, including reasonable
attorney fees of the holder hereof in attempting to enforce payment of this Note
and reasonable attorney fees for defending the validity of any document securing
this Note as a valid first and prior lien.

     This Note is given for an actual loan of money for business purposes and
not for personal, agricultural or residential purposes, and is executed and
delivered in the State of Oklahoma and shall be governed by and construed in
accordance with the laws of the State of Oklahoma. This Note is an extension and
change in form of the $15,150,000 Promissory Note dated effective July 31, 2001.


                                         AAON, INC., an Oklahoma corporation



                                         By /s/ Norman H. Asbjornson
                                            ------------------------------------
                                                Norman H. Asbjornson, President


                                         AAON COIL PRODUCTS, INC.,
                                         A Texas corporation (formerly known as
                                         CP/AAON, Inc.)



                                         By /s/ Norman H. Asbjornson
                                            ------------------------------------
                                                Norman H. Asbjornson, President


                                      (7)