Sparton Awarded $28 Million Q53F, Q62E, and Q36B Sonobuoy Subcontract

For Immediate Release

SCHAUMBURG, Ill. – April 27, 2011 – Sparton Corporation (NYSE: SPA) announced today, the award of a $28.5 million subcontract to manufacture sonobuoys for the United States Navy as part of the Company’s ERAPSCO joint venture. Production will be performed at Sparton’s DeLeon Springs, Fla., facility and is expected to be completed by October 2012.

ERAPSCO is a joint venture between Sparton and USSI, a subsidiary of Ultra Electronics Holdings PLC. Under the ERAPSCO subcontract, Sparton will produce 34,458 sonobuoys. The types of sonobuoys to be produced are AN/SSQ-53F, AN/SSQ-62E, and AN/SSQ-36B which are used to support the United States Naval Antisubmarine Forces. The primary purpose of a sonobuoy is to detect acoustic emissions or reflections from potentially hostile submarines and transmit these signals to US Navy airborne antisubmarine warfare forces.

The AN/SSQ-53F sonobuoy is a passive acoustic sensor that is used for detection, classification, and localization of adversary submarines during peacetime and combat operations. The AN/SSQ-62E DICASS sonobuoy is an active acoustic sensor that is used in the final localization and attack phase of submarine prosecutions. The AN/SSQ-36B sonobuoy measures the temperature profile of a water column providing sonar propagation and acoustic range prediction.

“Sparton is firmly committed to the development of innovative technology and to supplying the U.S. Navy with quality products that help secure our borders. We are proud to continue in our role as a technology partner for the U.S. Navy,” said Cary Wood, president and CEO, Sparton Corporation.

Currently headquartered in Schaumburg, Sparton is the only U.S.-owned designer and manufacturer of sonobuoys for the U.S. Navy.

About Sparton Corporation

Sparton Corporation (NYSE:SPA), now in its 110th year, is a provider of complex and sophisticated electromechanical devices with capabilities that include concept development, industrial design, design and manufacturing engineering, production, distribution, and field service to technology-driven companies in the medical device, defense & security systems, and electronic manufacturing services markets. Headquartered in Schaumburg, Ill., Sparton currently has four manufacturing locations worldwide. The Company’s Web site may be accessed at

Safe Harbor and Fair Disclosure Statement

Certain statements described in this press release are forward-looking statements within the scope of the Securities Act of 1933, as amended (the “Securities Act”), and the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Forward-looking statements may be identified by the words “believe,” “expect,” “anticipate,” “project,” “plan,” “estimate,” “will” or “intend” and similar words or expressions. These forward- looking statements reflect Sparton’s current views with respect to future events and are based on currently available financial, economic and competitive data and its current business plans. Actual results could vary materially depending on risks and uncertainties that may affect Sparton’s operations, markets, prices and other factors. Important factors that could cause actual results to differ materially from those forward-looking statements include, but are not limited to, Sparton’s financial performance and the implementations and results of its ongoing strategic initiatives. For a more detailed discussion of these and other risk factors, see Part I, Item 1A, Risk Factors and Part II, Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations, in Sparton’s Form 10-K for the year ended June 30, 2009, and its other filings with the Securities and Exchange Commission. Sparton undertakes no obligation to publicly update or revise any forward-looking statement as a result of new information, future events or otherwise, except as otherwise required by law.

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