EXHIBIT 10.5
                                 PROMISSORY NOTE

$200,000                                                       November 29, 2004
                                                    St. Charles County, Missouri


     FOR VALUE  RECEIVED,  the  undersigned,  LMI  Aerospace,  Inc.,  a Missouri
corporation  (the  "Company"),  hereby promises to pay to the order of Ronald S.
Saks ("Payee"),  the principal sum of Two Hundred Thousand  Dollars  ($200,000).
Interest shall be payable on the outstanding balance of this Note at the rate of
twelve  percent  (12%) per  annum,  payable  quarterly  in  arrears  on the last
business day of each February, May, August and October,  commencing February 28,
2005.

     The entire  principal amount of this Note shall be due and payable December
31, 2007,  subject to mandatory or  discretionary  prepayment as hereinafter set
forth.

     THE  OBLIGATIONS  EVIDENCED BY THIS NOTE ARE SUBJECT TO THE  PROVISIONS  OF
THAT CERTAIN SUBORDINATION AGREEMENT DATED AS OF NOVEMBER 29, 2004, ENTERED INTO
BY PAYEE FOR THE  BENEFIT OF WELLS  FARGO  BUSINESS  CREDIT,  INC.,  A MINNESOTA
CORPORATION  ("SENIOR  LENDER").  PAYMENTS  BY THE  COMPANY  UNDER THIS NOTE ARE
SUBJECT TO THE LIMITATIONS SET FORTH IN SUCH SUBORDINATION AGREEMENT.

     This  Note is one of a series  of  notes  executed  as of the  date  hereof
evidencing  loans in aggregate  amount of  $1,000,000  and  containing  the same
interest,  payment and maturity  terms as set forth in this Note  (collectively,
the "Notes").

     Subject to limitations in the  Subordination  Agreement  referred to above,
the Company may at any time and  without  penalty  prepay all or any part of the
principal amount of this Note,  together with accrued interest thereon,  and the
Company shall be obligated to make  prepayments on all Notes,  in the proportion
of the original  principal  amount of each Note to the aggregate amount of loans
evidenced by all the Notes, promptly in the following circumstances:

          (a) Holders of the Notes shall  receive 100% of net proceeds  from the
     settlement or other  resolution of ongoing  litigation  between the Company
     and Lockheed  Martin  Corporation  caused by cost overruns on certain C-130
     components  produced  by the  Company  since 2002 for which a claim will be
     filed in 2005.

          (b) Provided that as of the date of sale  referred to below,  there is
     at least $3,000,000 in excess  Availability  under the Company's  revolving
     credit  facility  with  Senior  Lender,  Payee shall be entitled to receive
     fifty  percent  (50%) of the net proceeds  received from any sale of Tempco
     Engineering,  Inc.  that are in excess of Senior  Lender's  lendable  asset
     value attributed to Tempco  Engineering,  Inc. as of the date of such sale.
     Such  lendable  asset  value  shall be  determined  by  adding  the  forced
     liquidation  value,  as of the date of such  sale,  of  equipment  owned by
     Tempco  Engineering,  Inc.  to the amount of the  Borrowing  Base under the
     Company's   revolving   credit   facility   with  Senior  Lender  which  is
     attributable to Tempco  Engineering,  Inc. as of the date of such sale. The
     forced  liquidating  value of such equipment  owned by Tempco  Engineering,
     Inc. shall be determined by an appraiser  selected by the Company's  Senior
     Lender in its sole discretion.

          (c) After  November 30,  2005,  the Company may pay, and the Payee may
     receive, principal payments of $250,000 for each quarter if the Company has
     maintained at least  $3,000,000 in average  excess  Availability  under its
     revolving  credit facility with Senior Lender for at least ninety (90) days
     immediately  preceding  such  quarterly  principal  payment,  which average
     excess  Availability  shall be  calculated  on the  last  day of each  such
     quarter.

     This Note and all of the other  Notes are  secured  by the grant of lien by
the Company  against the  Company's  real property and  improvements  located at
3010-3030 Highway 94, St. Charles County, Missouri as provided in a certain Deed
of Trust  dated as of the date of this Note.  The holder of this Note shall have
the benefit of all rights granted under such Deed of Trust.

     This Note shall be  governed  by and  interpreted  in  accordance  with the
internal substantive laws of the State of Missouri, without giving effect to its
conflicts-of-law  principles  and  regardless of the  jurisdiction  in which the
Company executes this Note.

     Presentment,  demand for  payment,  protest,  notice of protest,  notice of
dishonor  and  diligence  in bringing  suit against any party or to or any party
liable  hereon are hereby  waived by all  present  and  future  parties  hereto,
whether as maker, endorser, surety or in any other capacity.

     ORAL AGREEMENTS OR COMMITMENTS TO LOAN MONEY,  EXTEND CREDIT OR TO FOREBEAR
FROM ENFORCING  REPAYMENT OF A DEBT  INCLUDING  PROMISES TO EXTEND OR RENEW SUCH
DEBT ARE NOT ENFORCEABLE, REGARDLESS OF THE LEGAL THEORY UPON WHICH IT IS BASED,
THAT IS IN ANY WAY RELATED TO THE CREDIT  AGREEMENT  (THIS NOTE). TO PROTECT YOU
(THE COMPANY) AND US (THE PAYEE) FROM  MISUNDERSTANDING  OR DISAPPOINTMENT,  ANY
AGREEMENTS WE REACH COVERING SUCH MATTERS ARE CONTAINED IN THE CREDIT  AGREEMENT
(THIS NOTE AND THE DEED OF TRUST REFERRED TO HEREIN), WHICH ARE THE COMPLETE AND
EXCLUSIVE  STATEMENTS OF THE AGREEMENT  BETWEEN US, EXCEPT AS WE MAY LATER AGREE
IN WRITING TO MODIFY IT.


                                        LMI AEROSPACE, INC.,
                                        a Missouri corporation


                                        By
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                                        Title
                                             -----------------------------------


     Payable at 3600 Mueller Road, St.  Charles,  Missouri  63301,  or any other
address,  written  notice of which is given to the Company by the holder of this
Note.