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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

For the quarterly period ended March 30, 2013 or

For the transition period from                      to                     

Commission File Number 0-7087

ASTRONICS CORPORATION

(Exact name of registrant as specified in its charter)

(716) 805-1599

(Registrant’s telephone number, including area code)

NOT APPLICABLE

(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(g) of the Act:

$.01 par value Common Stock, $.01 par value Class B Stock

(Title of Class)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months, and (2) has been subject to such filing requirements for the past 90 days.    Yes   x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “large accelerated filer”, an “accelerated filer”, a “non-accelerated filer” and a “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

As of March 30, 2013, 14,508,323 shares of common stock were outstanding consisting of 11,153,230 shares of common stock ($.01 par value) and 3,355,093 shares of Class B common stock ($.01 par value).

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TABLE OF CONTENTS

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Part 1 – Financial Information

Item 1. Financial Statements

ASTRONICS CORPORATION

Consolidated Condensed Balance Sheets

March 30, 2013 with Comparative Figures for December 31, 2012

(In thousands)

See notes to consolidated condensed financial statements

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ASTRONICS CORPORATION

Consolidated Condensed Statements of Operations

Three Months Ended March 30, 2013 With Comparative Figures for 2012

(Unaudited)

(In thousands, except per share data)

See notes to consolidated condensed financial statements.

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ASTRONICS CORPORATION

Consolidated Condensed Statements of Comprehensive Income

Three Months Ended March 30, 2013 With Comparative Figures for 2012

(Unaudited)

(In thousands)

See notes to consolidated condensed financial statements.

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ASTRONICS CORPORATION

Consolidated Condensed Statements of Cash Flows

Three Months Ended March 30, 2013

With Comparative Figures for 2012

(Unaudited)

(In thousands)

See notes to consolidated condensed financial statements.

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ASTRONICS CORPORATION

Notes to Consolidated Condensed Financial Statements

March 30, 2013

(Unaudited)

1) Basis of Presentation

The accompanying unaudited statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information. Accordingly, they do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments, consisting of normal recurring accruals, considered necessary for a fair presentation have been included.

Operating Results

The results of operations for any interim period are not necessarily indicative of results for the full year. Operating results for the three month period ended March 30, 2013 are not necessarily indicative of the results that may be expected for the year ending December 31, 2013.

The balance sheet at December 31, 2012 has been derived from the audited financial statements at that date, but does not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements.

For further information, refer to the financial statements and footnotes thereto included in Astronics Corporation’s 2012 annual report on Form 10-K.

Description of the Business

Astronics is a leading supplier of advanced, high-performance lighting systems, electrical power generation and distribution systems, avionics databus solutions, enhanced vision systems and aircraft safety systems for the global aerospace industry as well as test, training and simulation systems primarily for the military. We sell our products to airframe manufacturers (OEMs) in the commercial transport, business jet and military markets as well as FAA/Airport, OEM suppliers and aircraft operators around the world. The Company provides its products through its wholly owned subsidiaries Astronics Advanced Electronic Systems Corp. (“AES”), Ballard Technology, Inc. (“Ballard”), DME Corporation (“DME”), Luminescent Systems, Inc. (“LSI”), Luminescent Systems Canada, Inc. (“LSI Canada”) and Max-Viz Inc. (“Max-Viz”). On July 30, 2012 Astronics acquired by merger, 100% of the stock of Max-Viz, Inc. Max-Viz is a manufacturer of industry-leading enhanced vision systems for defense and commercial aerospace applications for the purpose of improving situational awareness. Max-Viz is part of our Aerospace segment.

The Company has two reportable segments, Aerospace and Test Systems. The Aerospace segment designs and manufactures products for the global aerospace industry. The Test Systems segment designs, manufactures and maintains communications and weapons test systems and training and simulation devices for military applications.

Principles of Consolidation

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated. Acquisitions are accounted for under the purchase method and, accordingly, the operating results for the acquired companies are included in the consolidated statements of earnings from the respective dates of acquisition.

Revenue and Expense Recognition

In the Aerospace segment, revenue is recognized on the accrual basis at the time of shipment of goods and transfer of title. There are no significant contracts allowing for right of return.

In the Test Systems segment, revenue of approximately 27% and 40% for the three months ending March 30, 2013 and March 31, 2012 respectively, is recognized from long-term, fixed-price contracts using the percentage-of-completion method of accounting, measured by multiplying the estimated total contract value by the ratio of actual contract costs incurred to date to the estimated total contract costs. Substantially all long-term contracts are with U.S. government agencies and contractors thereto. The Company makes significant estimates involving its usage of percentage-of-completion accounting to recognize contract revenues. The Company periodically reviews contracts in process for estimates-to-completion, and revises estimated gross profit accordingly. While the Company believes its estimated gross profit on contracts in process is reasonable, unforeseen events and changes in circumstances can take place in a subsequent accounting period that may cause the Company to revise its estimated gross profit on one or more of its contracts in process. Accordingly, the ultimate gross profit realized upon completion of such contracts can vary significantly from estimated amounts between accounting periods. Revenue not recognized using the percentage-of-completion method is recognized at the time of shipment of goods and transfer of title.

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Cost of Products Sold, Engineering and Development and Selling, General and Administrative Expenses

Cost of products sold includes the costs to manufacture products such as direct materials and labor and manufacturing overhead as well as all engineering and developmental costs. The Company is engaged in a variety of engineering and design activities as well as basic research and development activities directed to the substantial improvement or new application of the Company’s existing technologies. These costs are expensed when incurred and included in cost of products sold. Research and development, design and related engineering amounted to $12.8 million and $10.0 million for the three months ended March 30, 2013 and March 31, 2012 respectively. Selling, general and administrative expenses include costs primarily related to our sales and marketing departments and administrative departments. Interest expense is shown net of interest income. Interest income was insignificant for the three months ended March 30, 2013 and March 31, 2012.

Financial Instruments

The Company’s financial instruments consist primarily of cash and cash equivalents, accounts receivable, accounts payable, notes payable, long-term debt and interest rate swaps. The Company performs periodic credit evaluations of its customers’ financial condition and generally does not require collateral. The Company does not hold or issue financial instruments for trading purposes. Due to their short-term nature, the carrying values of cash and equivalents, accounts receivable, accounts payable, and notes payable, if any, approximate fair value. The carrying value of the Company’s variable rate long-term debt also approximates fair value due to the variable rate feature of these instruments. The Company’s interest rate swaps are recorded at fair value as described under Note 16—Fair Value and Note 17—Derivative Financial Instruments.

Derivatives

The accounting for changes in the fair value of derivatives depends on the intended use and resulting designation. The Company’s use of derivative instruments is limited to cash flow hedges for interest rate risk associated with long-term debt. Interest rate swaps are used to adjust the proportion of total debt that is subject to variable and fixed interest rates. The interest rate swaps are designated as hedges of the amount of future cash flows related to interest payments on variable-rate debt that, in combination with the interest payments on the debt, convert a portion of the variable-rate debt to fixed-rate debt. The Company records all derivatives on the balance sheet at fair value as described under Note 16—Fair Value and Note 17—Derivative Financial Instruments. The related gains or losses, to the extent the derivatives are effective as a hedge, are deferred in shareholders’ equity as a component of Accumulated Other Comprehensive Income (Loss) (AOCI) and reclassified into earnings at the time interest expense is recognized on the associated long-term debt. Any ineffectiveness is immediately recorded in the statement of operations.

Foreign Currency Translation

The Company accounts for its foreign currency translation in accordance with Accounting Standards Codification (“ASC”) Topic 830, Foreign Currency Translation. The aggregate transaction gain or loss included in operations was insignificant for the periods ending March 30, 2013 and March 31, 2012.

Loss contingencies

Loss contingencies may from time to time arise from situations such as claims and other legal actions. Loss contingencies are recorded as liabilities when it is probable that a liability has been incurred and the amount of the loss is reasonably estimable. Disclosure is required when there is a reasonable possibility that the ultimate loss will exceed the recorded provision. Contingent liabilities are often resolved over long time periods. In recording liabilities for probable losses, management is required to make estimates and judgments regarding the amount or range of the probable loss. Management continually assesses the adequacy of estimated loss contingencies and, if necessary, adjusts the amounts recorded as better information becomes known.

Accounting Pronouncements Adopted in 2013

On January 1, 2013, the Company adopted the new provisions of Accounting Standards Update (“ASU”) No. 2013-02 Comprehensive Income (Topic 220). The amendments in this ASU require the Company to provide information about the amounts reclassified out of accumulated other comprehensive income, by component. Other than requiring additional disclosures, the adoption of this amendment does not have a material impact on the Company’s financial statements.

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2) Inventories

Inventories are stated at the lower of cost or market, cost being determined in accordance with the first-in, first-out method. Inventories are as follows:

The Company records valuation reserves to provide for excess, slow moving or obsolete inventory or to reduce inventory to the lower of cost or market value. In determining the appropriate reserve, the Company considers the age of inventory on hand, the overall inventory levels in relation to forecasted demands as well as reserving for specifically identified inventory that the Company believes is no longer salable.

3) Property, Plant and Equipment

The following table summarizes Property, Plant and Equipment as follows:

4) Intangible Assets

The following table summarizes acquired intangible assets as follows:

All acquired intangible assets other than goodwill and one trade name are being amortized. Amortization expense for acquired intangibles is summarized as follows:

Amortization expense for intangible assets expected for 2013 and for each of the next five years is summarized as follows:

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5) Goodwill

The following table summarizes the changes in the carrying amount of goodwill for 2013:

6) Long-term Debt and Notes Payable

The Company extended and modified its existing credit facility by entering into Amendment No, 1 dated as of March 27, 2013 (the “Amendment”), to the Second Amended and Restated Credit Agreement ( the “Credit Agreement”). The Amendment provides for an increase in the Company’s revolving credit facility from $35 million to $75 million and for an extension of the maturity date of the revolving credit facility to March 27, 2018. There is $11.0 million outstanding under the term loan under the Credit Agreement and such term loan continues to mature on January 30, 2014.

Covenants have been modified to eliminate the maximum capital expenditure limit, the cap on permitted acquisitions was increased to $25 million per acquisition and $50 million in the aggregate and the permitted allowance for share repurchases was increased to $20 million. In addition, the maximum permitted Leverage Ratio has been increased to 3.75 to 1 for each fiscal quarter ending on or after March 31, 2013 and to 3.50 to 1 for each fiscal quarter ending after March 31, 2015.

Prior to the Amendment, the Company’s Credit Agreement provided for a revolving credit line in the amount of $35 million, less outstanding letters of credit, through August 31, 2016.

Interest on both loans remains at a rate of LIBOR plus between 1.50% and 2.50% based on the Company’s Leverage Ratio under the Credit Agreement. The credit facility allocates up to $20 million of the $75 million revolving credit line for the issuance of letters of credit, including certain existing letters of credit. The credit facility is secured by substantially all of the Company’s assets.

There was $7.0 million outstanding on our credit facility at both March 30, 2013 and December 31, 2012 which is reported as long-term. The Company had available on its credit facility $58.0 million at March 30, 2013. At March 30, 2013, outstanding letters of credit totaled $10.0 million. In addition, the Company is required to pay a commitment fee quarterly at a rate of between 0.25% and 0.35% per annum on the unused portion of the total revolving credit commitment, also based on the Company’s Leverage Ratio.

7) Product Warranties

In the ordinary course of business, the Company warrants its products against defects in design, materials and workmanship typically over periods ranging from twelve to sixty months. The Company determines warranty reserves needed by product line based on experience and current facts and circumstances. Activity in the warranty accrual is summarized as follows:

8) Income Taxes

The Company recognizes deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial reporting and tax basis of assets and liabilities. Deferred tax assets are reduced, if deemed necessary, by a valuation allowance for the amount of tax benefits which are not expected to be realized. Investment tax credits are recognized on the flow through method.

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ASC Topic 740-10 Overall—Uncertainty in Income Taxes (“ASC Topic 740-10”) clarifies the accounting and disclosure for uncertainty in tax positions. ASC Topic 740-10 seeks to reduce the diversity in practice associated with certain aspects of the recognition and measurement related to accounting for income taxes. The Company is subject to the provisions of ASC Topic 740-10 and has analyzed filing positions in all of the federal and state jurisdictions where it is required to file income tax returns, as well as all open tax years in these jurisdictions. Should the Company need to accrue a liability for uncertain tax benefits, any interest associated with that liability will be recorded as interest expense. Penalties, if any, would be recognized as operating expenses. There are no penalties or interest liability accrued as of March 30, 2013 or December 31, 2012, nor are any penalties or interest costs included in expense for the three month periods ending March 30, 2013 and March 31, 2012. The years under which we conducted our evaluation coincided with the tax years currently still subject to examination by major federal and state tax jurisdictions, those being 2010 through 2012 for federal purposes and 2009 through 2012 for state purposes.

The effective tax rates for the three months ended March 30, 2013 and March 31, 2012 was approximately 21.0% and 32.3%, respectively. The effective tax rate for the first three months of 2013 was impacted primarily by the domestic production activity deduction, lower foreign taxes due to foreign research and development (“R&D”) tax credits, the recognition of approximately $1.1 million in domestic 2012 R&D tax credits and $0.2 million in domestic 2013 R&D tax credits. The effective tax rate for the first three months of 2012 was impacted primarily by the domestic production activity deduction as well as foreign R&D tax credits.

9) Shareholders’ Equity

The changes in shareholders’ equity for the three months ended March 30, 2013 are summarized as follows as adjusted to reflect the impact of the three-for-twenty distribution of Class B Stock as discussed in Note 10:

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10) Earnings Per Share

Basic and diluted weighted-average shares outstanding are as follows:

The above information has been adjusted to reflect the impact of the three-for-twenty distribution of Class B Stock for shareholders of record on October 29, 2012.

11) Accumulated Other Comprehensive Loss and Other Comprehensive Loss

The components of accumulated other comprehensive loss are as follows:

The components of other comprehensive loss are as follows:

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12) Supplemental Retirement Plan and Related Post Retirement Benefits

The Company has two non-qualified supplemental retirement defined benefit plans (“SERP” and “SERP II”) for certain executive officers. The following table sets forth information regarding the net periodic pension cost for the plans.

Participants in the SERP are entitled to paid medical, dental and long-term care insurance benefits upon retirement under the plan. The following table sets forth information regarding the net periodic cost recognized for those benefits:

13) Sales to Major Customers

The Company has a significant concentration of business with one major customer, Panasonic Aviation Corporation. The following is information relating to the activity with that customer:

14) Legal Proceedings

The Company is subject to various legal proceedings, claims, and litigation arising in the ordinary course of business. While the outcome of these matters is currently not determinable, we do not expect these matters will have a material adverse effect on our business, financial position, results of operations, or cash flows. However, the results of these matters cannot be predicted with certainty. Should the Company fail to prevail in any legal matter or should several legal matters be resolved against the Company in the same reporting period, then the financial results of that particular reporting period could be materially adversely affected.

On November 11, 2010, AE Liquidation Inc. filed an action in the United States Bankruptcy Court for the District of Delaware (AE Liquidation, Inc., et al v. Luminescent Systems Inc., and AE Liquidation, Inc., et al., v Astronics Advanced Electronic Systems Corp.) seeking to recover $1.4 million of alleged preferential payments received from Eclipse Aviation Corporation. The Company disputes the Trustee’s allegations and believes any loss, as a result of future proceedings would not have a material adverse effect on our business. We intend to defend this claim vigorously.

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We are a defendant in an action filed in the Regional State Court of Mannheim, Germany (Lufthansa Technik AG v. Astronics Advanced Electronics Systems Corp.) relating to an allegation of patent infringement. The damages sought include injunctive relief, as well as monetary damages. We dispute the allegation and intend to vigorously defend ourselves in this action. We have filed a nullity action with the Federal Patent Court in Munich Germany, requesting the court to revoke the German part of the European patent that is subject to the claim. In November 2011, the regional state court of Manheim Germany, issued an interim decision to the effect that the infringement litigation proceedings be stayed until the Federal Patent Court decides on the concurrent nullity action. At this time we are unable to provide a reasonable estimate of our potential liability or the potential amount of loss related to this action, if any. If the outcome of this litigation is adverse to us, our results and financial condition could be materially affected.

15) Segment Information

Below are the sales and operating profit by segment for the three months ended March 30, 2013 and March 31, 2012 and a reconciliation of segment operating profit to earnings before income taxes. Operating profit is the net sales less cost of products sold and other operating expenses excluding interest and corporate expenses. Cost of products sold and other operating expenses are directly identifiable to the respective segment.

Identifiable Assets

16) Fair Value

ASC Topic 820, Fair value Measurements and Disclosures, (“ASC Topic 820”) defines fair value, establishes a framework for measuring fair value and expands the related disclosure requirements. This statement applies under other accounting pronouncements that require or permit fair value measurements. The statement indicates, among other things, that a fair value measurement assumes that the transaction to sell an asset or transfer a liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability. ASC Topic 820 defines fair value based upon an exit price model. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and involves consideration of factors specific to the asset or liability.

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ASC Topic 820 establishes a valuation hierarchy for disclosure of the inputs to valuation used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows:

Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities.

Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument.

Level 3 inputs are unobservable inputs based on our own assumptions used to measure assets and liabilities at fair value.

On a Recurring Basis:

A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The following table provides the financial assets and liabilities carried at fair value measured on a recurring basis as of March 30, 2013 and December 31, 2012:

Interest rate swaps are securities with no quoted readily available Level 1 inputs, and therefore are measured at fair value using inputs that are directly observable in active markets and are classified within Level 2 of the valuation hierarchy, using the income approach (See Note 17).

Our Level 3 fair value liabilities represent contingent consideration recorded related to the Ballard acquisition to be paid up to a maximum of $5.5 million if certain revenue growth targets are met over the next four years and the Max-Viz acquisition to be paid up to a maximum of $8.0 million if certain revenue growth targets are met over the next three years. The amounts recorded were calculated using an estimate of the probability of future revenue. The varying contingent payments were then discounted to the present value utilizing a discounted cash flow methodology. The contingent consideration liabilities have no observable Level 1 or Level 2 inputs. There was no significant change in the fair value of the liabilities related to the Ballard and Max-Viz acquisitions from December 31, 2012.

On a Non-recurring Basis:

In accordance with the provisions of ASC Topic 350 Intangibles – Goodwill and Other the Company estimates the fair value of reporting units, utilizing unobservable Level 3 inputs. Level 3 inputs require significant management judgment due to the absence of quoted market prices or observable inputs for assets of a similar nature. The Company utilizes a discounted cash flow analysis to estimate the fair value of reporting units utilizing unobservable inputs. The fair value measurement of the reporting unit under the step-one and step-two analysis of the quantitative goodwill impairment test are classified as Level 3 inputs.

Intangible assets that are amortized are evaluated for recoverability whenever adverse effects or changes in circumstances indicate that the carrying value may not be recoverable. The recoverability test consists of comparing the undiscounted projected cash flows with the carrying amount. Should the carrying amount exceed undiscounted projected cash flows, an impairment loss would be recognized to the extent the carrying amount exceeds fair value. For the Company’s indefinite-lived intangible asset, the impairment test consists of comparing the fair value, determined using the relief from royalty method, with its carrying amount. An impairment loss would be recognized for the carrying amount in excess of its fair value.

At March 30, 2013, the fair value of goodwill and intangible assets classified using Level 3 inputs are as follows:

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As of March 30, 2013, the Company concluded that no indicators of impairment relating to intangible assets or goodwill existed and an interim test was not performed.

Due to their short-term nature, the carrying value of cash and equivalents, accounts receivable, accounts payable, and notes payable approximate fair value. The carrying value of the Company’s variable rate long-term debt instruments also approximates fair value due to the variable rate feature of these instruments.

17) Derivative Financial Instruments

At March 30, 2013, we had interest rate swaps consisting of the following:

At both March 30, 2013 and December 31, 2012, the fair value of interest rate swaps was a liability of $0.2 million, which is included in other liabilities (See Note 16). Amounts expected to be reclassified to earnings in the next 12 months is approximately $0.1 million.

To the extent the interest rate swaps are not perfectly effective in offsetting the change in the value of the payments being hedged; the ineffective portion of these contracts is recognized in earnings immediately as interest expense. Ineffectiveness, if any, was not significant for the three months ended March 30, 2013 and March 31, 2012. The Company classifies the cash flows from hedging transactions in the same category as the cash flows from the respective hedged items. Amounts from ineffectiveness, if any, to be reclassified during 2013 are not expected to be significant.

Activity in AOCI related to these derivatives is summarized below:

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18) Recent Accounting Pronouncements

The Company’s management has reviewed recent accounting pronouncements issued through the date of the issuance of financial statements. In management’s opinion, none of these new pronouncements apply or will have a material effect on the Company’s financial statements.

19) Acquisition

On July 30, 2012 we completed a business combination within our aerospace segment. We acquired by merger, 100% of the stock of Max-Viz, Inc. (“Max-Viz”), a manufacturer of industry-leading Enhanced Vision Systems for defense and commercial aerospace applications for the purpose of improving situational awareness. The addition of Max-Viz diversifies the products and technologies that Astronics offers. We purchased the outstanding stock of Max-Viz for $10.7 million in cash plus contingent purchase consideration up to a maximum of $8.0 million subject to meeting certain revenue growth targets over the next three years. Max-Viz’s unaudited 2012 revenue through the acquisition date was approximately $5.4 million.

The additional contingent purchase consideration is recorded at its estimated fair value at the date of acquisition based upon the Company’s assessment of the probability of Max-Viz achieving the revenue growth targets. The estimated fair value of this contingent consideration is insignificant. The goodwill recognized is comprised primarily of intangible assets that do not require separate recognition. Substantially all of the goodwill and purchased intangible assets are expected to be deductible for tax purposes over 15 years. The purchase price allocation for the 2012 acquisition is complete.

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Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

(The following should be read in conjunction with Management’s Discussion and Analysis of Financial Condition and Results of Operations contained in the Company’s Form 10-K for the year ended December 31, 2012.)

OVERVIEW

Astronics Corporation, through its subsidiaries Astronics Advanced Electronic Systems Corp., Ballard Technology, DME Corporation, Luminescent Systems Inc., Luminescent Systems Canada Inc., and Max-Viz, Inc. designs and manufactures electrical power generation systems, control and distribution systems, lighting systems and components, aircraft safety products, avionics databus solutions, enhanced vision systems and test, training and simulation systems. The Company operates in two distinct segments, Aerospace and Test Systems and has eight principal facilities. The Company has one location in each of New York State, New Hampshire, Oregon and Quebec, Canada, and two facilities in each of Washington State, and Florida.

Our Aerospace segment serves four primary markets. They are the military, commercial transport, business jet and FAA/airport markets. We serve one primary market in the Test Systems segment, which is the military. Our strategy is to develop and maintain positions of technical leadership in chosen aerospace and test system markets, to leverage those positions to grow the amount of content and volume of product it sells to the markets in those segments and to selectively acquire businesses with similar technical capabilities that could benefit from our leadership position and strategic direction.

Key factors affecting our growth and profitability are the rate at which new aircraft are produced, government funding of military programs, our ability to have our products designed into the plans for new aircraft and the rates at which aircraft owners, including commercial airlines, refurbish or install upgrades to their aircraft. Once designed into a new aircraft, the spare parts business is frequently retained by the Company. We continue to look for opportunities in all of our markets to capitalize on our core competencies to expand our existing business and to grow through strategic acquisitions.

ACQUISITIONS

On July 30, 2012 we acquired by merger, 100% of the stock of Max-Viz, Inc. (“Max-Viz”) a manufacturer of industry-leading enhanced vision systems for defense and commercial aerospace applications for the purpose of improving situational awareness. Max-Viz will be included in our aerospace reporting segment. The addition of Max-Viz diversifies the products and technologies that Astronics offers. We acquired Max-Viz for $10.7 million in cash plus contingent purchase consideration up to a maximum of $8.0 million subject to meeting certain revenue growth targets over the next three years. The additional purchase consideration is recorded at its estimated fair value at the date of acquisition based upon the Company’s assessment of the probability of Max-Viz achieving the revenue growth targets. The estimated value of the contingent consideration recorded is insignificant.

CONSOLIDATED RESULTS OF OPERATIONS AND OUTLOOK

A discussion by segment can be found at “Segment Results of Operations and Outlook” in this MD&A.

Our consolidated sales for the first quarter of 2013 increased by 13.6% to $74.0 million compared with $65.1 million for the same period last year. Aerospace sales increased by $9.7 million and Test Systems sales decreased by $0.8 million.

Consolidated gross margin was 27.3% in the first quarter of 2013 compared with 27.8% in the first quarter of 2012. Margin leverage achieved from increased sales volume was partially offset by increased engineering and development (“E&D”) costs. Additionally, warranty and inventory obsolescence expense was lower in 2013 as compared with the prior year. E&D costs were $12.8 million in the first quarter of 2013 compared with $10.0 million in the same period of 2012, an increase of $2.8 million. Expense relating to warranty and inventory reserves decreased by $0.9 million in the 2013 first quarter compared with the 2012 first quarter. We expect our full year consolidated E&D expenses for 2013 to be in the range of $48 million to $53 million.

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Selling, general and administrative (“SG&A”) expenses were approximately $9.2 million, or 12.4% of sales in the first quarter of 2013 compared with $8.9 million, or 13.6% of sales in the same period last year. The increase was due primarily to the July 30, 2012 acquisition of Max-Viz, which added $0.6 million to SG&A in the first quarter of 2013 as compared with the prior year first quarter, partially offset by legal costs which decreased by $0.5 million compared with the same period last year .

The effective tax rate for the three month period ended March 30, 2013 was 21.0%, lower than would be expected by applying the U.S. federal statutory tax rate to earnings before income taxes and lower than the rate we expect in the future. The effective tax rate for the first quarter of 2013 was lower than the federal statutory rate, due to the domestic production activity deduction, lower tax rates on foreign income, foreign Research & Development (“R&D”) tax credits as well as the recognition of domestic R&D tax credits for the year ended December 31, 2012 totaling approximately $1.1 million . R&D tax credits for 2012 were not recognized in 2012, as the American Tax Payer Relief Act of 2012 which extended the R&D tax credit for 2012, was not enacted until 2013. We expect our effective tax rate for the remaining three quarters of 2013 to be in the range of 30% to 32%.

Net income for the first quarter of 2013 was $8.6 million or $0.56 per diluted share, an increase of $2.5 million from $6.1 million, or $0.40 per diluted share in the first quarter of 2012. The earnings per share increase is due to the increase in net income. Earnings per share for all periods presented have been calculated reflecting the effect of the 15% Class B share distribution for shareholders of record on October 29, 2012.

SEGMENT RESULTS OF OPERATIONS AND OUTLOOK

Operating profit, as presented below, is sales less cost of products sold and other operating expenses, excluding interest expense and other corporate expenses. Cost of products sold and other operating expenses are directly identifiable to the respective segment. Operating profit is reconciled to earnings before income taxes in Note 15 of the Notes to Consolidated Condensed Financial Statements included in this report.

AEROSPACE