WOOD DALE, ILLINOIS (May 4, 2010) — AAR today announced that it has been selected by the U.S. Army Aviation and Missile Command (AMCOM), Huntsville, Alabama, to upgrade and modify the Government of Egypt’s Integrated Air Defense Command and Control System. This work will be performed by AAR Precision Systems located in Huntsville, Alabama. The contract is valued at approximately $8 million.

The Integrated Air Defense Command and Control System is a single command and control, communication, computer, intelligence and battle management (C⁴I/BM) network designed to integrate airborne and land-based air defenses. AAR will upgrade and modernize the system by replacing older electronic components with advanced solid-state circuitry to increase reliability and operability, minimize obsolescence issues and increase system longevity. AAR is currently under contract to support the Government of Egypt on a separate engineering services program administered through the U.S. Army.

“AAR is proud to continue its support to the Government of Egypt through our relationship with the U.S. Army’s Security Assistance Command,” said Terry Stinson, Group Vice President of AAR’s Structures & Systems segment. “We have been involved in the development and maintenance of missile defense systems for over 20 years and have unique, high-value repair, refurbishment, sustainment and obsolescence mitigation capabilities.”

Precision Systems provides precision machining, fabrication and engineering services and designs and manufactures a wide variety of interior and exterior composite structures for defense and commercial markets. AAR recently combined AAR Composites and AAR Summa Technology into a single business, AAR Precision Systems, to provide customers with a single source for advanced aerostructure design, engineering and manufacturing services.

About AAR
AAR is a publicly traded provider of value-added products and services to the worldwide aerospace and government/defense industries. With facilities and sales locations around the world, AAR uses its close-to-the-customer business model to serve aviation and government/defense customers through three operating segments: Aviation Supply Chain; Maintenance, Repair and Overhaul; and Structures and Systems. More information can be found at www.aarcorp.com.

This press release contains certain statements relating to future results, which are forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements are based on beliefs of Company management, as well as assumptions and estimates based on information currently available to the Company, and are subject to certain risks and uncertainties that could cause actual results to differ materially from historical results or those anticipated, including those factors discussed under Item 1A, entitled “Risk Factors”, included in the Company’s May 31, 2009 Form 10-K. Should one or more of these risks or uncertainties materialize adversely, or should underlying assumptions or estimates prove incorrect, actual results may vary materially from those described. These events and uncertainties are difficult or impossible to predict accurately and many are beyond the Company’s control. The Company assumes no obligation to update any forward-looking statements to reflect events or circumstances after the date of such statements or to reflect the occurrence of anticipated or unanticipated events. For additional information, see the comments included in AAR’s filings with the Securities and Exchange Commission.