SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

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                                    FORM 8-K
                                 CURRENT REPORT


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

                Date of Earliest Event Reported: January 5, 2004


                               LMI AEROSPACE, INC.
             (Exact Name of Registrant as Specified in Its Charter)


                                    Missouri
                 (State or Other Jurisdiction of Incorporation)


       0-24293                                           43-1309065
(Commission File Number)                    (I.R.S. Employer Identification No.)

3600 Mueller Road, St. Charles, Missouri                    63301
(Address of Principal Executive Offices)                  (Zip Code)

                                 (636) 946-6525
              (Registrant's Telephone Number, Including Area Code)

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Item 5.  Other Events.

         On  January  5, 2004 LMI  Aerospace,  Inc.  (the  "Company")  and Union
Planters  Bank,  N.A.  (the  "Bank")  entered  into a Twelfth  Amendment to Loan
Agreement (the "Twelfth Amendment"),  amending that certain Loan Agreement dated
as of August 15, 1996 (the" Loan Agreement")  between Leonard's Metal, Inc., the
predecessor in interest to the Company,  and Magna Bank,  National  Association,
the predecessor in interest to the Bank. By the terms of the Loan Agreement,  as
amended by the Eleventh  Amendment to Loan  Agreement  dated April 15, 2003 (the
"Eleventh  Amendment"),  the Company's Revolving Line of Credit was to mature on
January 5, 2004. The Company and the Bank entered into the Twelfth  Amendment in
order to amend the Loan  Agreement to (i) extend the  maturity on the  Company's
Revolving  Line of Credit from  January 5, 2004 until March 31,  2004,  and (ii)
waive an event of default  arising under Section  8.01(i) of the Loan  Agreement
because  the Company  and the Bank did not enter into an  amendment  to the Loan
Agreement  on  or  before  January  5,  2004  establishing   minimum  levels  of
Consolidated  EBITDA to apply for periods after  December 31, 2003. In addition,
the Twelfth  Amendment  amended the Loan Agreement in order to  memorialize  the
value  of  certain  reductions  in the  available  amount  under  the  Company's
Revolving  Line of Credit  previously  made in accordance  with the terms of the
Eleventh Amendment.

         The Company is in the  process of  restructuring  its debt  obligations
under the Loan Agreement,  including the Revolving Line of Credit.  Although the
Company believes it will be successful in this endeavor,  there can no assurance
that the Company will be successful in restructuring  its debt obligations prior
to the  expiration of the Revolving  Line of Credit on March 31, 2004, or in the
alternative,  that the  Company  will be  successful  in  obtaining  replacement
financing on suitable terms by such date.

         This  Form  8-K  includes  forward-looking  statements  related  to LMI
Aerospace's  outlook  for 2004 and  future  periods,  which are based on current
management expectations.  Such forward-looking statements are subject to various
risks and uncertainties,  many of which are beyond the control of LMI Aerospace,
Inc. Actual results could differ materially from the forward-looking  statements
as a result,  among other things,  of the factors  detailed from time to time in
LMI  Aerospace's  filings with the  Securities and Exchange  Commission.  Please
refer  to the  introductory  disclosures  beginning  on page one and  under  the
heading Risk Factors  starting on page three of the  Company's  Annual Report on
Form 10-K for the year ended December 31, 2002 for more details.


Item 7.  Financial Statements and Exhibits

         (a) Not applicable

         (b) Not applicable

         (c) Exhibits

         Exhibit Number             Description

         10.1                       Twelfth Amendment to Loan Agreement





                                    SIGNATURE


         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 thereunto duly authorized.

Date:  January 5, 2004

                                    LMI AEROSPACE, INC.


                                    By: /s/ Lawrence E. Dickinson
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                                        Lawrence E. Dickinson
                                        Chief Financial Officer and Secretary