ACSS OFFERS NEW DATALINKING SOLUTION

License Agreement With PENTAR In Place To Develop, Manufacture, Support & Market the CMS-1000

Contact:
Steve Henden
Manager, Communications
ACSS, an L-3 Communications & Thales Company
623-445-7021

PHOENIX, May 19, 2003 – ACSS, an L-3 Communications & Thales Company, has entered into a license agreement with PENTAR avionics, a Seattle-based manufacturer of aviation datalink products, to develop, manufacture, support and market the CMS-1000. The CMS-1000 is an integrated, low cost communications management system that combines communications management, VDL-2 radio and display in one unit. The CMS-1000 is anticipated to earn technical standard order authorization from the Federal Aviation Administration in June 2003.

“The CMS-1000 provides a fully–functional and affordable VDL-2 datalinking capability in one easy to install package,” said Joe Hoffman, ACSS president. “It employs advanced processing that means lower connect fees with the service providers.”

The CMS-1000 is a state of the art, high performance flight deck data communication system that enhances flight operations by giving crew access to ACARS and non-ACARS networks for messaging, ATS, weather and other services. The CMS-1000 integrates a full-function CMU, VDL Mode 2 digital radio, and Control Display Unit (CDU), offering operators an unparalleled combination of functionality and value in a small package. The CMS-1000 is the flagship of a product family, which will include a stand-alone CMU, CDU, and VHF Data Radio.

ACSS (Aviation Communication & Surveillance Systems, LLC), an L-3 Communications & Thales Company, is a leader in safety avionics systems. ACSS products include the TCAS 2000 and TCAS 1500 traffic alert and collision avoidance systems, a family of Mode S transponders and the T²CAS, a combined traffic and terrain collision avoidance system. More than 8,000 units of ACSS' TCAS products are currently operating in commercial, corporate and military aircraft. Thales Avionics is the exclusive sales agent of ACSS products to the Commercial Air Transport market. To learn more about ACSS, please visit the company's web site at www.L-3com.com/acss.

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995: Except for historical information contained herein, the matters set forth in this news release are forward-looking statements. The forward-looking statements set forth above involve a number of risks and uncertainties that could cause actual results to differ materially from any such statement, including the risks and uncertainties discussed in the company's Safe Harbor Compliance Statement for Forward-looking Statements included in the company's recent filings, including Forms 10-K and 10-Q, with the Securities and Exchange Commission.