Document:

EXHIBIT 10.34

                       THIRD AMENDMENT TO LOAN ARRANGEMENT

This Third Amendment to Loan Arrangement ("THIRD AMENDMENT") is between Portland
Brewing Company, an Oregon corporation ("BORROWER") and MacTarnahan Limited
Partnership, an Oregon limited partnership ("LENDER").

                                    RECITALS

     A.    Borrower and Lender are parties to a Promissory Note, as amended (the
           "EXISTING NOTE"), and an Agreement Concerning Loans and Security
           Interests, each dated November 1, 2001;

     B.    Borrower has requested that certain amendments be made to the
           Existing Note; and

     C.    Lender is willing to make certain amendments to the Existing Note on
           the terms and conditions provided in this Third Amendment.

     D.    The parties wish to amend and restate the Existing Note to reflect
           the changes requested by Borrower, as well as changes contained in
           the First Amendment to Loan Arrangement dated June 1, 2002 ("FIRST
           AMENDMENT"), and the Second Amendment to Loan Arrangement dated
           October 1, 2002 ("SECOND AMENDMENT").

                                    AGREEMENT

     1.    AMENDED AND RESTATED PROMISSORY NOTE. The Parties agree that the
           Existing Note will be surrendered, and an Amended and Restated
           Promissory Note will be executed. The Amended and Restated Promissory
           Note is attached as Exhibit A.

     2.    FURTHER ASSURANCES. The parties will sign other documents and take
           other actions reasonably necessary to further effect and evidence
           this Third Amendment.

     3.    GOVERNING LAW. This Third Amendment is governed by the laws of the
           State of Oregon, without giving effect to any conflict-of-law
           principle of any jurisdiction.

     4.    VENUE. Any action or proceeding arising out of this Third Amendment
           will be litigated in courts located in Multnomah County, Oregon. Each
           party consents and submits to the jurisdiction of any local, state,
           or federal court located in Multnomah County, Oregon.

     5.    ATTORNEY'S FEES. If any arbitration or litigation is instituted to
           interpret, enforce, or rescind this Third Amendment, including but
           not limited to any proceeding brought under the United States
           Bankruptcy Code, the prevailing party on a claim will be entitled to
           recover with respect to the claim, in addition to any other relief
           awarded, the prevailing party's reasonable attorney's fees, costs,
           and expenses incurred at arbitration, at trial, on appeal, and on
           petition for review, as determined by the arbitrator or court.

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     6.    ENTIRE AGREEMENT. This Third Amendment contains the entire
           understanding of the parties regarding the subject matter of this
           Third Amendment and supersedes all prior and contemporaneous
           negotiations and agreements, whether written or oral, between the
           parties with respect to the subject matter of this Third Amendment.

     7.    SIGNATURES. This Third Amendment may be signed in counterparts. A fax
           transmission of a signature page will be considered an original
           signature page. At the request of a party, the other party will
           confirm a fax-transmitted signature page by delivering an original
           signature page to the requesting party.

           Dated effective:  January 1, 2003

                                 MacTarnahan Limited Partnership, by
                                 Harmer Mill & Logging Supply Co., its General
                                 Partner

                                 /s/ ROBERT M. MACTARNAHAN
                                 -------------------------
                                 By:  Robert M. MacTarnahan
                                 Its:  President

                                 PORTLAND BREWING COMPANY

                                 /s/ JEROME CHICVARA
                                 -------------------
                                 By:  Jerome Chicvara
                                 Its:  Chief Executive Officer

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                                    EXHIBIT A

THIS PROMISSORY NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 OR
ANY STATE SECURITIES LAWS. THIS PROMISSORY NOTE MAY NOT BE SOLD, ASSIGNED, OR
OTHERWISE NEGOTIATED TO ANY PERSON UNLESS PURSUANT TO AN EFFECTIVE REGISTRATION
STATEMENT FILED UNDER THE SECURITIES ACT OF 1933 AND APPLICABLE STATE SECURITIES
LAWS, OR UNLESS BORROWER RECEIVES AN OPINION OF COUNSEL, IN FORM AND FROM
COUNSEL ACCEPTABLE TO BORROWER, THAT THE SALE, ASSIGNMENT, OR OTHER NEGOTIATION
IS EXEMPT FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT OF 1933 AND
APPLICABLE STATE SECURITIES LAWS.

                              AMENDED AND RESTATED

                                 PROMISSORY NOTE

$1,700,000.00                                                    January 1, 2003

This Amended and Restated Promissory Note ("NOTE") is made by Portland Brewing
Company, an Oregon corporation ("BORROWER"), in favor of MacTarnahan Limited
Partnership, an Oregon limited partnership ("LENDER"). This Note replaces the
Promissory Note dated November 1, 2001 between the parties (the "ORIGINAL
NOTE"). In connection with the execution of this Note, the Original Note will be
surrendered and cancelled.

8.   PAYMENT. Borrower promises to pay to the order of Lender the principal
     amount of $1,700,000.00, together with interest on the unpaid principal
     amount from the date of this Note, as follows:

     (a)   on January 1, 2004, and on the same day of each of the following 34
           months, $15,000.00 together with accrued interest;

     (b)   on April 10, 2004 - and on the same day of each following year until
           the entire principal amount, together with accrued interest, has been
           paid in its entirety - $35,000.00;

     (c)   on July 10, 2004 - and on the same day of each following year until
           the entire principal amount, together with accrued interest, has been
           paid in its entirety - $35,000.00; and

     (d)   on November 1, 2005, the entire unpaid principal amount together with
           accrued interest.

9.   VARIABLE INTEREST RATE.

     (a)   The interest rate on this Note is subject to change from time to time
           based on changes in an independent index which is the annual interest
           rate, adjusted daily,

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           published from time to time in The Wall Street Journal (Western
           Edition) as the "Prime Rate" in the "Money Rates" section, as of any
           date of determination (the "INDEX"). If the Index becomes unavailable
           during the term of this loan, Lender may designate a substitute index
           after notice to Borrower. Lender will tell Borrower the current index
           rate upon Borrower's request. The interest rate change will not occur
           more often than each day. The Index on the date of the Original Note
           was 5.50% per annum. The interest rate to be applied to the unpaid
           principal balance will be at a rate of 1.25 percentage points over
           the Index, resulting in an initial rate of 6.75% per annum. The Index
           is currently 4.25% per annum, resulting in an interest rate of 5.50%
           per annum.

     (b)   The annual interest rate for this Note is computed on a 365/360
           basis; that is, by applying the ratio of the annual interest rate
           over a year of 360 days, multiplied by the outstanding principal
           balance, multiplied by the actual number of days the principal
           balance is outstanding.

     (c)   Interest on the regular monthly payments originally due between June
           2002 and December 2003 (with the exception of the payment for
           December 2002, which was made), as well as interest on the payments
           originally due on April 10 and July 10 of 2002 and 2003, will be
           accrued monthly and will be added to the principal amount of this
           Note.

10.  PLACE OF PAYMENTS. All payments under this Note will be made to Harmer Mill
     & Logging Supply Co., Lender's general partner, at 11416 SW Lynnridge
     Avenue, Portland, Oregon 97225, or to any other person or any other address
     that Lender may designate by notice to Borrower.

11.  APPLICATION OF PAYMENTS.

(a) All payments made under Section 1(a) and all prepayments will apply as
follows:

     (1)   first to any costs and expenses due to Lender;

           (2) then to accrued interest to date of payment; and

           (3) then to the unpaid principal amount; and

(b) All payments made under Section 1(b) and Section 1(c) will apply as follows:

     (1)   first to any costs and expenses due to Lender; and

     (2)   then to the unpaid principal amount.

12.  PREPAYMENTS. Borrower may prepay a part or all of the unpaid principal
     amount at any time. Excess payments or prepayments will not be credited as
     future scheduled payments required by this Note.

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13.  CASH FLOW REVIEWS. On or about January 15, April 15, July 15, and October
     15 of each year until the entire principal amount, together with accrued
     interest, has been paid in its entirety, the president of Borrower will
     meet with Lender to review the cash flow situation of Borrower.

14.  SECURITY. The obligations of Borrower under this Note are secured by the
     Security Agreement dated as of the date of the Original Note between
     Borrower and Lender (the "SECURITY AGREEMENT").

15.  EVENTS OF DEFAULT. Each of the following is an event of default under this
     Note:

     (a)   Borrower fails to make any payment required by this Note within 20
           days after Lender notifies Borrower of the failure to make the
           payment when due;

     (b)   Borrower voluntarily dissolves or ceases to exist, or any final and
           nonappealable order or judgment is entered against Borrower ordering
           its dissolution;

     (c)   Borrower fails to pay, becomes insolvent or unable to pay, or admits
           in writing an inability to pay Borrower's debts as they become due,
           or makes a general assignment for the benefit of creditors;

     (d)   a proceeding with respect to Borrower is commenced under any
           applicable law for the benefit of creditors, including but not
           limited to any bankruptcy or insolvency law, or an order for the
           appointment of a receiver, liquidator, trustee, custodian, or other
           officer having similar powers over Borrower is entered; and

     (e)   an event of default occurs under the Security Agreement.

16.      REMEDIES. On and after an event of default under this Note, Lender may
         exercise the following remedies, which are cumulative and which may be
         exercised singularly or concurrently:

     (a)   upon notice to Borrower, the right to accelerate the due dates under
           this Note so that the unpaid principal amount, together with accrued
           interest, is immediately due in its entirety;

     (b)   any remedy available to Lender under the Security Agreement; and

     (c)   any other remedy available to Lender at law or in equity.

17.      AMENDMENT. This Note may be amended only by a written document signed
         by the party against whom enforcement is sought.

18.      WAIVER.

     (a)   Borrower waives demand, presentment for payment, notice of dishonor
           or nonpayment, protest, notice of protest, and lack of diligence in
           collection, and

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           agrees that Lender may extend or postpone the due date of any payment
           required by this Note without affecting Borrower's liability.

     (b)   No waiver will be binding on Lender unless it is in writing and
           signed by Lender. Lender's waiver of a breach of a provision of this
           Note will not be a waiver of any other provision or a waiver of a
           subsequent breach of the same provision.

19.      SEVERABILITY. If a provision of this Note is determined to be
         unenforceable in any respect, the enforceability of the provision in
         any other respect and of the remaining provisions of this Note will not
         be impaired.

20.      GOVERNING LAW. This Note is governed by the laws of the State of
         Oregon, without giving effect to any conflict-of-law principle of any
         jurisdiction.

21.      VENUE. Any action or proceeding arising out of this Note will be
         litigated in courts located in Multnomah County, Oregon. Borrower
         consents and submits to the jurisdiction of any local, state, or
         federal court located in Multnomah County, Oregon.

22.      ATTORNEY'S FEES. If any arbitration or litigation is instituted to
         interpret, enforce, or rescind this Note, including but not limited to
         any proceeding brought under the United States Bankruptcy Code, the
         prevailing party on a claim will be entitled to recover with respect to
         the claim, in addition to any other relief awarded, the prevailing
         party's reasonable attorney's fees, costs, and expenses incurred at
         arbitration, at trial, on appeal, and on petition for review, as
         determined by the arbitrator or court.

23.      COSTS AND EXPENSES. If an event of default under this Note occurs and
         Lender does not institute any arbitration or litigation, Borrower will
         pay to Lender, upon Lender's demand, all reasonable costs and expenses,
         including but not limited to attorney's fees and collection fees,
         incurred by Lender in attempting to collect the indebtedness evidenced
         by this Note.

                                    BORROWER:

                                                     Portland Brewing Company

                                                     ------------------------
                                                     By:  Frederick L. Bowman
                                                     Its:  President

6 - THIRD AMENDMENT TO LOAN ARRANGEMENTMarch 21, 2003

Frederick L. Bowman
President
Portland Brewing Company
2730 NW 31st Avenue
Portland, Oregon  97210

Re: Portland Brewing Company ("Company")

Dear Fred:

To the extent that the Company incurs working capital deficiencies in 2003, MLP
will provide funding to the Company in the form of debt or equity in an amount
not to exceed $500,000 to remedy cash deficiencies that may be necessary to fund
operations through December 31, 2003.

This agreement is binding and non-cancelable.

Very Truly Yours,

/s/ ROBERT M. MACTARNAHAN
-------------------------
Robert M. MacTarnahan
On Behalf of MacTarnahan Limited Partnership,
Harmer Mill & Logging Co., Robert M. MacTarnahan

Acknowledged:

/s/ FREDERICK L. BOWMAN
-------------------------
By: Frederick L. Bowman
Chairman & President

Cc:  Chris Hansen, Moss Adams LLP

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