----

----

| x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |
|---|-----------------------------------------------------------------------------------------|

| o | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |
|---|------------------------------------------------------------------------------------------|

| Missouri(State or other jurisdiction of incorporation or organization)                | 43-1309065(I.R.S. Employer Identification No.) |
|---------------------------------------------------------------------------------------|------------------------------------------------|
|                                                                                  |                                           |
| 411 Fountain Lakes Blvd.St. Charles, Missouri(Address of principal executive offices) |  63301(Zip Code)                          |

| Large accelerated filer |   | o |   | Accelerated filer         |   | x |
|-------------------------|--------|---|--------|---------------------------|--------|---|
| Non-accelerated filer   |   | o |   | Smaller reporting company |   | o |

----

----

----

LMI AEROSPACE, INC.

|           | PART I.  FINANCIAL INFORMATION                                                                                |   |
|----------------|-------------------------------------------------------------------------------------------------------------------------|--------|
|           |                                                                                                                    |
|           | Page No.                                                                                                                |
|           |                                                                                                                    |
| Item 1.        | Financial Statements (Unaudited).                                                                                       |   |
|           |                                                                                                                    |
|           | Condensed Consolidated Balance Sheets as of September 30, 2010 and December 31, 2009.                                   | 2      |
|           |                                                                                                                    |
|           | Condensed Consolidated Statements of Operations for the three months and nine months ended September 30, 2010 and 2009. | 3      |
|           |                                                                                                                    |
|           | Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2010 and 2009.                  | 4      |
|           |                                                                                                                    |
|           | Notes to Condensed Consolidated Financial Statements.                                                                   | 5      |
|           |                                                                                                                    |
| Item 2.        | Management’s Discussion and Analysis of Financial Condition and Results of Operations.                            | 14     |
|           |                                                                                                                    |   |
| Item 3.        | Quantitative and Qualitative Disclosures About Market Risk.                                                             | 21     |
|           |                                                                                                                    |   |
| Item 4.        | Controls and Procedures.                                                                                                | 22     |
|           |                                                                                                                    |   |
|           | PART II.  OTHER INFORMATION                                                                                   |   |
|           |                                                                                                                    |   |
| Item 1.        | Legal Proceedings.                                                                                                      | 23     |
|           |                                                                                                                    |   |
| Item 1A.       | Risk Factors.                                                                                                           | 23     |
|           |                                                                                                                    |   |
| Item 2.        | Unregistered Sales of Equity Securities and Use of Proceeds.                                                            | 23     |
|           |                                                                                                                    |   |
| Item 3.        | Defaults Upon Senior Securities.                                                                                        | 23     |
|           |                                                                                                                    |   |
| Item 4.        | Reserved.                                                                                                               | 23     |
|           |                                                                                                                    |   |
| Item 5.        | Other Information.                                                                                                      | 23     |
|           |                                                                                                                    |   |
| Item 6.        | Exhibits.                                                                                                               | 23     |
|           |                                                                                                                    |   |
| SIGNATURE PAGE | 24                                                                                                                      |
|           |                                                                                                                    |
| EXHIBIT INDEX  | 25                                                                                                                      |

----

Table of Contents

Item 1.  Financial Statements.

LMI Aerospace, Inc.

|                                                                                                                                                                            |   |               |    |   |              |   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------------------|---------|--------|-------------------|--------|
|                                                                                                                                                                            |   | September 30, 2010 |    |   | December 31, 2009 |   |
| Assets                                                                                                                                                                          |   |               |    |   |              |   |
| Current assets:                                                                                                                                                                 |   |               |    |   |              |   |
| Cash and cash equivalents                                                                                                                                                       |   | $                  | 34      |   |              | $      | 31 |   |
| Trade accounts receivable, net of allowance of $176 at September 30, 2010 and $279 at December 31, 2009                                                                         |   |               | 32,986  |   |              |   | 35,469 |   |
| Inventories, net                                                                                                                                                                |   |               | 44,575  |   |              |   | 45,703 |   |
| Prepaid expenses and other current assets                                                                                                                                       |   |               | 3,338   |   |              |   | 2,849 |   |
| Deferred income taxes                                                                                                                                                           |   |               | 3,723   |   |              |   | 3,799 |   |
| Total current assets                                                                                                                                                            |   |               | 84,656  |   |              |   | 87,851 |   |
|                                                                                                                                                                            |   |               |    |   |              |   |   |   |
| Property, plant and equipment, net                                                                                                                                              |   |               | 22,022  |   |              |   | 19,322 |   |
|                                                                                                                                                                            |   |               |    |   |              |   |   |   |
| Goodwill                                                                                                                                                                        |   |               | 49,102  |   |              |   | 49,102 |   |
| Intangible assets, net                                                                                                                                                          |   |               | 21,358  |   |              |   | 22,965 |   |
| Other assets                                                                                                                                                                    |   |               | 885     |   |              |   | 977 |   |
| Total assets                                                                                                                                                                    |   | $                  | 178,023 |   |              | $      | 180,217 |   |
|                                                                                                                                                                            |   |               |    |   |              |   |   |   |
| Liabilities and shareholders’ equity                                                                                                                                      |   |               |    |   |              |   |   |   |
| Current liabilities:                                                                                                                                                            |   |               |    |   |              |   |   |   |
| Accounts payable                                                                                                                                                                |   | $                  | 6,965   |   |              | $      | 7,778 |   |
| Accrued expenses                                                                                                                                                                |   |               | 13,584  |   |              |   | 8,089 |   |
| Short-term deferred gain on sale of real estate                                                                                                                                 |   |               | 233     |   |              |   | 233 |   |
| Current installments of long-term debt and capital lease obligations                                                                                                            |   |               | 215     |   |              |   | 326 |   |
| Total current liabilities                                                                                                                                                       |   |               | 20,997  |   |              |   | 16,426 |   |
|                                                                                                                                                                            |   |               |    |   |              |   |   |   |
| Long-term deferred gain on sale of real estate                                                                                                                                  |   |               | 3,132   |   |              |   | 3,307 |   |
| Long-term debt and capital lease obligations, less current installments                                                                                                         |   |               | 57      |   |              |   | 17,210 |   |
| Deferred income taxes                                                                                                                                                           |   |               | 7,546   |   |              |   | 7,546 |   |
| Other long-term liabilities                                                                                                                                                     |   |               | -       |   |              |   | 1,235 |   |
| Total long-term liabilities                                                                                                                                                     |   |               | 10,735  |   |              |   | 29,298 |   |
|                                                                                                                                                                            |   |               |    |   |              |   |   |   |
| Shareholders’ equity:                                                                                                                                                     |   |               |    |   |              |   |   |   |
| Common stock, $0.02 par value per share; authorized 28,000,000 shares; issued 12,074,604 shares and 11,996,389 shares at September 30, 2010 and December 31, 2009, respectively |   |               | 242     |   |              |   | 240 |   |
| Preferred stock, $0.02 par value per share; authorized 2,000,000 shares; none issued at either date                                                                             |   |               | -       |   |              |   | - |   |
| Additional paid-in capital                                                                                                                                                      |   |               | 73,018  |   |              |   | 71,375 |   |
| Treasury stock, at cost, 301,772 shares at September 30, 2010 and 359,188 shares at December 31, 2009                                                                           |   |               | (1,432  | )      |              |   | (1,704 | ) |
| Retained earnings                                                                                                                                                               |   |               | 74,463  |   |              |   | 64,582 |   |
| Total shareholders’ equity                                                                                                                                                |   |               | 146,291 |   |              |   | 134,493 |   |
| Total liabilities and shareholders’ equity                                                                                                                                |   | $                  | 178,023 |   |              | $      | 180,217 |   |
|                                                                                                                                                                            |   |               |    |   |              |   |   |   |
| See accompanying notes to condensed consolidated financial statements.                                                                                                          |   |

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Table of Contents

LMI Aerospace, Inc.

|                                                                   |   | Three Months EndedSeptember 30, |       |   | Nine Months EndedSeptember 30, |   |
|------------------------------------------------------------------------|--------|--------------------------------------|------------|--------|--------------------------------|--------|
|                                                                   |   | 2010                                 |       |   | 2009                           |   |   | 2010 |   |   | 2009 |   |
|                                                                   |   |                                 |       |   |                           |   |   |  Revised see Note 1 |   |   |   |   |
| Sales and service revenue                                              |   |                                 |       |   |                           |   |   |   |   |   |   |   |
| Product sales                                                          |   | $                                    | 33,036     |   |                           | $      | 38,212 |   |   | $ | 109,937 |   |   | $ | 120,789 |   |
| Service revenues                                                       |   |                                 | 19,248     |   |                           |   | 20,537 |   |   |   | 58,707 |   |   |   | 64,791 |   |
| Net sales                                                              |   |                                 | 52,284     |   |                           |   | 58,749 |   |   |   | 168,644 |   |   |   | 185,580 |   |
| Cost of sales and service revenue                                      |   |                                 |       |   |                           |   |   |   |   |   |   |   |   |   |   |   |
| Cost of product sales                                                  |   |                                 | 24,553     |   |                           |   | 30,055 |   |   |   | 81,099 |   |   |   | 92,556 |   |
| Cost of service revenues                                               |   |                                 | 15,766     |   |                           |   | 16,386 |   |   |   | 47,949 |   |   |   | 52,747 |   |
| Cost of sales                                                          |   |                                 | 40,319     |   |                           |   | 46,441 |   |   |   | 129,048 |   |   |   | 145,303 |   |
| Gross profit                                                           |   |                                 | 11,965     |   |                           |   | 12,308 |   |   |   | 39,596 |   |   |   | 40,277 |   |
|                                                                   |   |                                 |       |   |                           |   |   |   |   |   |   |   |   |   |   |   |
| Selling, general and administrative expenses                           |   |                                 | 8,231      |   |                           |   | 7,515 |   |   |   | 24,034 |   |   |   | 23,927 |   |
| Severance and restructuring                                            |   |                                 | -          |   |                           |   | (50 | ) |   |   | - |   |   |   | 312 |   |
| Income from operations                                                 |   |                                 | 3,734      |   |                           |   | 4,843 |   |   |   | 15,562 |   |   |   | 16,038 |   |
|                                                                   |   |                                 |       |   |                           |   |   |   |   |   |   |   |   |   |   |   |
| Other income (expense):                                                |   |                                 |       |   |                           |   |   |   |   |   |   |   |   |   |   |   |
| Interest expense, net                                                  |   |                                 | (160       | )      |                           |   | (443 | ) |   |   | (554 | ) |   |   | (1,278 | ) |
| Other, net                                                             |   |                                 | 55         |   |                           |   | (3 | ) |   |   | 10 |   |   |   | (27 | ) |
| Total other income (expense)                                           |   |                                 | (105       | )      |                           |   | (446 | ) |   |   | (544 | ) |   |   | (1,305 | ) |
|                                                                   |   |                                 |       |   |                           |   |   |   |   |   |   |   |   |   |   |   |
| Income before income taxes                                             |   |                                 | 3,629      |   |                           |   | 4,397 |   |   |   | 15,018 |   |   |   | 14,733 |   |
| Provision for income taxes                                             |   |                                 | 980        |   |                           |   | 1,609 |   |   |   | 5,137 |   |   |   | 5,382 |   |
|                                                                   |   |                                 |       |   |                           |   |   |   |   |   |   |   |   |   |   |   |
| Net income                                                             |   | $                                    | 2,649      |   |                           | $      | 2,788 |   |   | $ | 9,881 |   |   | $ | 9,351 |   |
|                                                                   |   |                                 |       |   |                           |   |   |   |   |   |   |   |   |   |   |   |
| Amounts per common share:                                              |   |                                 |       |   |                           |   |   |   |   |   |   |   |   |   |   |   |
| Net income per common share                                            |   | $                                    | 0.23       |   |                           | $      | 0.25 |   |   | $ | 0.87 |   |   | $ | 0.83 |   |
|                                                                   |   |                                 |       |   |                           |   |   |   |   |   |   |   |   |   |   |   |
| Net income per common share assuming dilution                          |   | $                                    | 0.23       |   |                           | $      | 0.25 |   |   | $ | 0.85 |   |   | $ | 0.83 |   |
|                                                                   |   |                                 |       |   |                           |   |   |   |   |   |   |   |   |   |   |   |
| Weighted average common shares outstanding                             |   |                                 | 11,442,567 |   |                           |   | 11,320,527 |   |   |   | 11,409,718 |   |   |   | 11,296,544 |   |
|                                                                   |   |                                 |       |   |                           |   |   |   |   |   |   |   |   |   |   |   |
| Weighted average dilutive common shares outstanding                    |   |                                 | 11,655,193 |   |                           |   | 11,348,333 |   |   |   | 11,623,058 |   |   |   | 11,324,697 |   |
|                                                                   |   |                                 |       |   |                           |   |   |   |   |   |   |   |   |   |   |   |
| See accompanying notes to condensed consolidated financial statements. |   |

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Table of Contents

LMI Aerospace, Inc.

|                                                                              |   | Nine Months EndedSeptember 30, |    |
|-----------------------------------------------------------------------------------|--------|--------------------------------|---------|
|                                                                              |   | 2010                           |    |   | 2009 |   |
| Operating activities:                                                             |   |                           |    |   |   |   |
| Net income                                                                        |   | $                              | 9,881   |   |   | $ | 9,351 |   |
| Adjustments to reconcile net income to net cash provided by operating activities: |   |                           |    |   |   |   |   |   |
| Depreciation and amortization                                                     |   |                           | 5,520   |   |   |   | 5,567 |   |
| Restricted stock compensation                                                     |   |                           | 1,381   |   |   |   | 1,290 |   |
| Charges for inventory obsolescence and valuation                                  |   |                           | 1,004   |   |   |   | 1,521 |   |
| Other noncash items                                                               |   |                           | (277    | ) |   |   | 428 |   |
| Changes in operating assets and liabilities, net of acquired businesses:          |   |                           |    |   |   |   |   |   |
| Trade accounts receivable                                                         |   |                           | 2,584   |   |   |   | (10,018 | ) |
| Inventories                                                                       |   |                           | 124     |   |   |   | 10,151 |   |
| Prepaid expenses and other assets                                                 |   |                           | 811     |   |   |   | 180 |   |
| Accounts payable                                                                  |   |                           | (1,294  | ) |   |   | (7,261 | ) |
| Accrued expenses                                                                  |   |                           | 3,601   |   |   |   | (448 | ) |
| Net cash provided by operating activities                                         |   |                           | 23,335  |   |   |   | 10,761 |   |
| Investing activities:                                                             |   |                           |    |   |   |   |   |   |
| Additions to property, plant and equipment                                        |   |                           | (5,931  | ) |   |   | (2,648 | ) |
| Acquisitions, net of cash acquired                                                |   |                           | -       |   |   |   | (10,047 | ) |
| Other, net                                                                        |   |                           | (671    | ) |   |   | (110 | ) |
| Net cash used by investing activities                                             |   |                           | (6,602  | ) |   |   | (12,805 | ) |
| Financing activities:                                                             |   |                           |    |   |   |   |   |   |
| Principal payments on capital leases and notes payable                            |   |                           | (264    | ) |   |   | (374 | ) |
| Advances on revolving line of credit                                              |   |                           | 13,520  |   |   |   | 43,819 |   |
| Payments on revolving line of credit                                              |   |                           | (30,520 | ) |   |   | (38,819 | ) |
| Other, net                                                                        |   |                           | 534     |   |   |   | (132 | ) |
| Net cash (used) provided by financing activities                                  |   |                           | (16,730 | ) |   |   | 4,494 |   |
| Net increase in cash and cash equivalents                                         |   |                           | 3       |   |   |   | 2,450 |   |
| Cash and cash equivalents, beginning of year                                      |   |                           | 31      |   |   |   | 29 |   |
| Cash and cash equivalents, end of quarter                                         |   | $                              | 34      |   |   | $ | 2,479 |   |
|                                                                              |   |                           |    |   |   |   |   |   |
| See accompanying notes to condensed consolidated financial statements.            |   |

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Table of Contents

LMI Aerospace, Inc.

----

Table of Contents

|                              |   | For the three months endedended March 31, 2010 |   |   | For the three months endedended June 30, 2010 |   |   | For the six months endedended June 30, 2010 |   |
|-----------------------------------|--------|------------------------------------------------|--------|--------|-----------------------------------------------|--------|--------|---------------------------------------------|--------|
|                              |   | As PreviouslyPresented                         |   |   | AsRevised                                     |   |   | As PreviouslyPresented                      |   |   | AsRevised |   |   | As PreviouslyPresented |   |   | AsRevised |   |
| Sales and service revenue         |   |                                           |   |   |                                          |   |   |                                        |   |   |   |   |   |   |   |   |   |   |
| Product sales                     |   | $                                              | 40,244 |   |                                          | $      | 40,244 |                                        |   | $ | 36,657 |   |   | $ | 36,657 |   |   | $ | 76,901 |   |   | $ | 76,901 |   |
| Service revenues                  |   |                                           | 20,171 |   |                                          |   | 20,171 |                                        |   |   | 19,288 |   |   |   | 19,288 |   |   |   | 39,459 |   |   |   | 39,459 |   |
| Net sales                         |   |                                           | 60,415 |   |                                          |   | 60,415 |                                        |   |   | 55,945 |   |   |   | 55,945 |   |   |   | 116,360 |   |   |   | 116,360 |   |
| Cost of sales and service revenue |   |                                           |   |   |                                          |   |   |                                        |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Cost of product sales             |   |                                           | 27,776 |   |                                          |   | 29,516 |                                        |   |   | 25,021 |   |   |   | 27,030 |   |   |   | 52,797 |   |   |   | 56,546 |   |
| Cost of service revenues          |   |                                           | 18,233 |   |                                          |   | 16,493 |                                        |   |   | 17,699 |   |   |   | 15,690 |   |   |   | 35,932 |   |   |   | 32,183 |   |
| Cost of sales                     |   |                                           | 46,009 |   |                                          |   | 46,009 |                                        |   |   | 42,720 |   |   |   | 42,720 |   |   |   | 88,729 |   |   |   | 88,729 |   |
| Gross profit                      |   | $                                              | 14,406 |   |                                          | $      | 14,406 |                                        |   | $ | 13,225 |   |   | $ | 13,225 |   |   | $ | 27,631 |   |   | $ | 27,631 |   |

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Table of Contents

| Cash acquired                 |   | $      | 1,010  |   |
|-------------------------------|--------|--------|--------|--------|
| Other current assets          |   |   | 850    |   |
| Fixed assets                  |   |   | 812    |   |
| Intangible assets             |   |   | 7,139  |   |
| Goodwill                      |   |   | 6,194  |   |
| Current liabilities assumed   |   |   | (1,092 | )      |
| Long-term liabilities assumed |   |   | (3,913 | )      |
| Cost of acquisitions          |   | $      | 11,000 |   |

|                                  |   | September 30, 2010 |   |   | December 31, 2009 |   |
|---------------------------------------|--------|--------------------|--------|--------|-------------------|--------|
|                                  |   |               |   |   |              |   |   |   |
| Raw materials                         |   | $                  | 7,576  |   |              | $      | 7,256 |   |
| Work in progress                      |   |               | 7,859  |   |              |   | 8,133 |   |
| Manufactured and purchased components |   |               | 11,905 |   |              |   | 10,539 |   |
| Finished goods                        |   |               | 14,117 |   |              |   | 16,607 |   |
| Product inventory                     |   |               | 41,457 |   |              |   | 42,535 |   |
| Capitalized contract costs            |   |               | 3,118  |   |              |   | 3,168 |   |
| Total inventories                     |   | $                  | 44,575 |   |              | $      | 45,703 |   |

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Table of Contents

|                       |   | September 30, 2010 |    |   | December 31, 2009 |   |
|----------------------------|--------|--------------------|---------|--------|-------------------|--------|
|                       |   |               |    |   |              |   |   |   |
| Trademarks                 |   | $                  | 4,582   |   |              | $      | 4,582 |   |
| Customer intangible assets |   |               | 21,515  |   |              |   | 21,515 |   |
| Other                      |   |               | 2,082   |   |              |   | 2,082 |   |
| Accumulated amortization   |   |               | (6,821) |   |              |   | (5,214) |   |
| Intangible assets, net     |   | $                  | 21,358  |   |              | $      | 22,965 |   |

| Year ending December 31,                                                  |            |   |   |   |
|---------------------------------------------------------------------------|-----------------|--------|--------|--------|
|                                                                      | 2010 (1)        |   | $      | 536    |   |
|                                                                      | 2011            |   |   | 2,136  |   |
|                                                                      | 2012            |   |   | 2,125  |   |
|                                                                      | 2013            |   |   | 2,042  |   |
|                                                                      | 2014            |   |   | 1,923  |   |
|                                                                      | 2015            |   |   | 1,828  |   |
|                                                                      | Thereafter      |   |   | 6,546  |   |
|                                                                      | Nonamortizeable |   |   | 4,222  |   |
|                                                                      |            |   | $      | 21,358 |   |
|                                                                      |            |   |   |   |   |
| (1)  Represents amortization expense for the remainder of 2010. |            |

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Table of Contents

|                                                                                                                                                               |   | September 30, 2010 |   |   | December 31, 2009 |   |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------------------|--------|--------|-------------------|--------|
|                                                                                                                                                               |   |               |   |   |              |   |
| Capital lease obligations                                                                                                                                          |   | $                  | 163    |   |              | $      | 245 |   |
| Revolving line of credit                                                                                                                                           |   |               | -      |   |              |   | 17,000 |   |
| Notes payable, principal and interest payable monthly, at fixed rates, ranging from 6.48% to 10.00% at September 30, 2010 and 2.78% to 10.70% at December 31, 2009 |   |               | 109    |   |              |   | 291 |   |
| Total debt                                                                                                                                                         |   |               | 272    |   |              |   | 17,536 |   |
| Less current installments                                                                                                                                          |   |               | 215    |   |              |   | 326 |   |
| Total                                                                                                                                                              |   | $                  | 57     |   |              | $      | 17,210 |   |

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Table of Contents

| Stock Options                                |   | Shares |    |   | Weighted Average Exercise Price Per Share |   |
|----------------------------------------------|--------|--------|---------|--------|------------------------------------------------|--------|
|                                         |   |   |    |   |                                           |   |
| Outstanding at January 1, 2010               |   |   | 28,210  |   |                                           | $      | 2.78 |   |
| Granted                                      |   |   | -       |   |                                           |   | - |   |
| Exercised                                    |   |   | (20,360 | )      |                                           |   | 3.08 |   |
| Forfeited or expired                         |   |   | -       |   |                                           |   | - |   |
| Outstanding at September  30, 2010 |   |   | 7,850   |   |                                           | $      | 2.00 |   |

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Table of Contents

|                              |   |   |    |
|-----------------------------------|--------|--------|---------|
| Restricted Stock Awards           |   | Shares |    |   | Weighted Average Grant Date Fair Value |   |
| Outstanding at January 1, 2010    |   |   | 294,322 |   |   | $ | 20.19 |   |
| Granted                           |   |   | 76,691  |   |   |   | 14.20 |   |
| Vested                            |   |   | (48,341 | ) |   |   | 22.26 |   |
| Forfeited                         |   |   | (2,427  | ) |   |   | 23.07 |   |
| Outstanding at September 30, 2010 |   |   | 320,245 |   |   | $ | 18.43 |   |

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Table of Contents

|                    |   | Three Months Ended September 30, |   |   | Nine Months Ended September 30, |   |
|-------------------------|--------|----------------------------------|--------|--------|---------------------------------|--------|
|                    |   | 2010                             |   |   | 2009                            |   |   | 2010 |   |   | 2009 |   |
|                    |   |                             |   |   |                            |   |   |   |   |   |   |   |
| Net sales:              |   |                             |   |   |                            |   |   |   |   |   |   |   |
| Aerostructures          |   | $                                | 34,473 |   |                            | $      | 38,653 |   |   | $ | 113,923 |   |   | $ | 122,229 |   |
| Engineering Services    |   |                             | 17,994 |   |                            |   | 20,241 |   |   |   | 55,213 |   |   |   | 63,664 |   |
| Eliminations            |   |                             | (183   | )      |                            |   | (145 | ) |   |   | (492 | ) |   |   | (313 | ) |
|                    |   | $                                | 52,284 |   |                            | $      | 58,749 |   |   | $ | 168,644 |   |   | $ | 185,580 |   |
|                    |   |                             |   |   |                            |   |   |   |   |   |   |   |   |   |   |   |
|                    |   |                             |   |   |                            |   |   |   |   |   |   |   |   |   |   |   |
| Income from operations: |   |                             |   |   |                            |   |   |   |   |   |   |   |   |   |   |   |
| Aerostructures          |   | $                                | 2,493  |   |                            | $      | 2,548 |   |   | $ | 11,512 |   |   | $ | 9,601 |   |
| Engineering Services    |   |                             | 1,271  |   |                            |   | 2,309 |   |   |   | 4,144 |   |   |   | 6,365 |   |
| Eliminations            |   |                             | (30    | )      |                            |   | (14 | ) |   |   | (94 | ) |   |   | 72 |   |
|                    |   | $                                | 3,734  |   |                            | $      | 4,843 |   |   | $ | 15,562 |   |   | $ | 16,038 |   |

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Item 2.  Management’s Discussion and Analysis of Financial Condition and Results of Operations.

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|                   |   | Three Months EndedSeptember 30, 2010 |   |
|------------------------|--------|--------------------------------------|--------|
|                   |   | ($ in millions)                      |   |
|                   |   | Aerostructures                       |   |   | Engineering Services |   |   | Elimination |   |   | Total |   |
| Net sales              |   | $                                    | 34.4   |   |   | $ | 18.0 |   |   | $ | (0.2 | ) |   | $ | 52.2 |   |
| Cost of sales          |   |                                 | 25.5   |   |   |   | 15.0 |   |   |   | (0.1 | ) |   |   | 40.4 |   |
| Gross profit           |   |                                 | 8.9    |   |   |   | 3.0 |   |   |   | (0.1 | ) |   |   | 11.8 |   |
| S, G, & A          |   |                                 | 6.4    |   |   |   | 1.7 |   |   |   | - |   |   |   | 8.1 |   |
| Income from operations |   | $                                    | 2.5    |   |   | $ | 1.3 |   |   | $ | (0.1 | ) |   | $ | 3.7 |   |
|                   |   |                                 |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                   |   | Three Months Ended                   |   |
|                   |   | September 30, 2009                   |   |
|                   |   | ($ in millions)                      |   |
|                   |   | Aerostructures                       |   |   | Engineering Services |   |   | Elimination |   |   | Total |   |
| Net sales              |   | $                                    | 38.6   |   |   | $ | 20.2 |   |   | $ | (0.1 | ) |   | $ | 58.7 |   |
| Cost of sales          |   |                                 | 30.3   |   |   |   | 16.2 |   |   |   | (0.1 | ) |   |   | 46.4 |   |
| Gross profit           |   |                                 | 8.3    |   |   |   | 4.0 |   |   |   | - |   |   |   | 12.3 |   |
| S, G, & A          |   |                                 | 5.8    |   |   |   | 1.7 |   |   |   | - |   |   |   | 7.5 |   |
| Income from operations |   | $                                    | 2.5    |   |   | $ | 2.3 |   |   | $ | - |   |   | $ | 4.8 |   |

|                            |   | Three Months Ended September 30, |   |
|---------------------------------|--------|----------------------------------|--------|
| Category                        |   | 2010                             |   |   | % of Total |   |   | 2009 |   |   | % of Total |   |
|                            |   | ($ in millions)                  |   |
| Corporate and regional aircraft |   | $                                | 9.9    |   |   |   | 28.8% |   |   | $ | 9.3 |   |   |   | 24.1% |   |
| Large commercial aircraft       |   |                             | 12.5   |   |   |   | 36.3% |   |   |   | 18.6 |   |   |   | 48.2% |   |
| Military                        |   |                             | 9.5    |   |   |   | 27.6% |   |   |   | 9.5 |   |   |   | 24.6% |   |
| Other                           |   |                             | 2.5    |   |   |   | 9.3% |   |   |   | 1.2 |   |   |   | 3.1% |   |
| Total                           |   | $                                | 34.4   |   |   |   | 100.0% |   |   | $ | 38.6 |   |   |   | 100.0% |   |

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|                            |   | Three Months Ended September 30, |   |
|---------------------------------|--------|----------------------------------|--------|
| Category                        |   | 2010                             |   |   | % of Total |   |   | 2009 |   |   | % of Total |   |
|                            |   | ($ in millions)                  |   |
| Corporate and regional aircraft |   | $                                | 4.9    |   |   |   | 27.2% |   |   | $ | 4.5 |   |   |   | 22.3% |   |
| Large commercial aircraft       |   |                             | 8.8    |   |   |   | 48.9% |   |   |   | 7.9 |   |   |   | 39.1% |   |
| Military                        |   |                             | 3.8    |   |   |   | 21.1% |   |   |   | 7.4 |   |   |   | 36.6% |   |
| Other                           |   |                             | 0.5    |   |   |   | 2.8% |   |   |   | 0.4 |   |   |   | 2.0% |   |
| Total                           |   | $                                | 18.0   |   |   |   | 100.0% |   |   | $ | 20.2 |   |   |   | 100.0% |   |

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|                                           |   | Nine Months EndedSeptember 30, 2010 |   |
|------------------------------------------------|--------|-------------------------------------|--------|
|                                           |   | ($ in millions)                     |   |
|                                           |   | Aerostructures                      |   |   | Engineering Services |   |   | Elimination |   |   | Total |   |
| Net sales                                      |   | $                                   | 113.9  |   |   | $ | 55.2 |   |   | $ | (0.5 | ) |   | $ | 168.6 |   |
| Cost of sales                                  |   |                                | 83.9   |   |   |   | 45.6 |   |   |   | (0.4 | ) |   |   | 129.1 |   |
| Gross profit                                   |   |                                | 30.0   |   |   |   | 9.6 |   |   |   | (0.1 | ) |   |   | 39.5 |   |
| S, G, & A                                  |   |                                | 18.5   |   |   |   | 5.5 |   |   |   | - |   |   |   | 24.0 |   |
| Income from operations                         |   | $                                   | 11.5   |   |   | $ | 4.1 |   |   | $ | (0.1 | ) |   | $ | 15.5 |   |
|                                           |   |                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                                           |   | Nine Months Ended                   |   |
|                                           |   | September 30, 2009                  |   |
|                                           |   | ($ in millions)                     |   |
|                                           |   | Aerostructures                      |   |   | Engineering Services |   |   | Elimination |   |   | Total |   |
| Net sales                                      |   | $                                   | 122.2  |   |   | $ | 63.7 |   |   | $ | (0.3 | ) |   | $ | 185.6 |   |
| Cost of sales                                  |   |                                | 94.0   |   |   |   | 51.7 |   |   |   | (0.4 | ) |   |   | 145.3 |   |
| Gross profit                                   |   |                                | 28.2   |   |   |   | 12.0 |   |   |   | 0.1 |   |   |   | 40.3 |   |
| S, G, & A and other charges  (1) |   |                                | 18.6   |   |   |   | 5.6 |   |   |   | 0.1 |   |   |   | 24.3 |   |
| Income from operations                         |   | $                                   | 9.6    |   |   | $ | 6.4 |   |   | $ | (0.0 | ) |   | $ | 16.0 |   |

|   | (1) | Includes severance and restructuring expenses of $0.3 million incurred by the Aerostructures segment. |
|--------|-----|-------------------------------------------------------------------------------------------------------|

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|                            |   | Nine Months Ended September 30, |   |
|---------------------------------|--------|---------------------------------|--------|
| Category                        |   | 2010                            |   |   | % of Total |   |   | 2009 |   |   | % of Total |   |
|                            |   | ($ in millions)                 |   |
| Corporate and regional aircraft |   | $                               | 33.7   |   |   |   | 29.6% |   |   | $ | 36.9 |   |   |   | 30.2% |   |
| Large commercial aircraft       |   |                            | 46.2   |   |   |   | 40.6% |   |   |   | 51.5 |   |   |   | 42.1% |   |
| Military                        |   |                            | 26.9   |   |   |   | 23.6% |   |   |   | 29.3 |   |   |   | 24.0% |   |
| Other                           |   |                            | 7.1    |   |   |   | 6.2% |   |   |   | 4.5 |   |   |   | 3.7% |   |
| Total                           |   | $                               | 113.9  |   |   |   | 100.0% |   |   | $ | 122.2 |   |   |   | 100.0% |   |

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|                            |   | Nine Months Ended September 30, |   |
|---------------------------------|--------|---------------------------------|--------|
| Category                        |   | 2010                            |   |   | % of Total |   |   | 2009 |   |   | % of Total |   |
|                            |   | ($ in millions)                 |   |
| Corporate and regional aircraft |   | $                               | 15.6   |   |   |   | 28.3% |   |   | $ | 14.2 |   |   |   | 22.3% |   |
| Large commercial aircraft       |   |                            | 23.0   |   |   |   | 41.7% |   |   |   | 27.5 |   |   |   | 43.2% |   |
| Military                        |   |                            | 15.1   |   |   |   | 27.4% |   |   |   | 20.3 |   |   |   | 31.9% |   |
| Other                           |   |                            | 1.5    |   |   |   | 2.6% |   |   |   | 1.7 |   |   |   | 2.6% |   |
| Total                           |   | $                               | 55.2   |   |   |   | 100.0% |   |   | $ | 63.7 |   |   |   | 100.0% |   |

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Item 3.  Quantitative and Qualitative Disclosures About Market Risk.

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Item 4.  Controls and Procedures.

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Item 1.  Legal Proceedings.

Item 1A.  Risk Factors.

Item 2.  Unregistered Sales of Equity Securities and Use of Proceeds.

Item 3.  Defaults Upon Senior Securities.

Item 4.  Reserved.

Item 5.  Other Information.

Item 6.  Exhibits.

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SIGNATURES

|   | LMI AEROSPACE, INC.                                                                                                             |
|--------|---------------------------------------------------------------------------------------------------------------------------------|
|   |                                                                                                                            |
|   | /s/ Ronald S. Saks                                                                                                              |
|   | Ronald S. Saks,Chief Executive Officer(Principal Executive Officer)                                                             |
|   |                                                                                                                            |
|   |                                                                                                                            |
|   | /s/ Lawrence E. Dickinson                                                                                                       |
|   | Lawrence E. DickinsonVice President, Chief Financial Officer and Secretary(Principal Financial and Principal AccountingOfficer) |

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EXHIBIT INDEX

| Exhibit No. |   | Description                                                                                                                                                                                                                                   |
|-------------|--------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|        |   |                                                                                                                                                                                                                                          |
| 3.1         |   | Restated Articles of Incorporation of the Registrant previously filed as Exhibit 3.1 to the Registrant’s Form S-1 (File No. 333-51357) filed on April 29, 1998 (the “Form S-1”) and incorporated herein by reference.       |
|        |   |                                                                                                                                                                                                                                          |
| 3.2         |   | Amendment to Restated Articles of Incorporation dated as of July 9, 2001 filed as Exhibit 3.3 to the Registrant’s Form 10-K for the fiscal year ended December 31, 2001 and filed April 1, 2002 and incorporated herein by reference.   |
|        |   |                                                                                                                                                                                                                                          |
| 3.3         |   | Amended and Restated By-Laws of the Registrant previously filed as Exhibit 3.2 to the Form S-1 and incorporated herein by reference.                                                                                                          |
|        |   |                                                                                                                                                                                                                                          |
| 3.4         |   | Amendment No. 1 to Amended and Restated By-Laws of the Registrant previously filed as Exhibit 3.1 to the Registrant’s Form 8-K filed June 26, 2009 and incorporated herein by reference.                                                |
|        |   |                                                                                                                                                                                                                                          |
| 4.1         |   | Form of the Registrant’s Common Stock Certificate previously filed as Exhibit 4.1 to the Form S-1 and incorporated herein by reference.                                                                                                 |
|        |   |                                                                                                                                                                                                                                          |
| 10.1        |   | Employment Agreement dated effective as of November 1, 2010 between D3 Technologies Inc. and Richard Johnson previously filed as Exhibit 10.1 to the Registrant’s Form 8-K filed October 21, 2010 and incorporated herein by reference. |
|        |   |                                                                                                                                                                                                                                          |
| 31.1        |   | Rule 13a-14(a) Certification of Ronald S. Saks, Chief Executive Officer.                                                                                                                                                                      |
|        |   |                                                                                                                                                                                                                                          |
| 31.2        |   | Rule 13a-14(a) Certification of Lawrence E. Dickinson, Vice President, Chief Financial Officer and Secretary.                                                                                                                                 |
|        |   |                                                                                                                                                                                                                                          |
| 32          |   | Certification pursuant to 18 U.S.C Section 1350 as adopted pursuant to Section 906 of Sarbanes-Oxley Act of 2002.                                                                                                                             |

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