L-3 ACSS SURVEILLANCE SOLUTIONS ARE STANDARD ONBOARD NEW EMBRAER AND DORNIER AIRCRAFT

Regional Jet Market Continues to be Strong for L-3 Communications

Contact:
Steve Henden
Manager, Communications
L-3 Communications, ACSS
602-436-5323

TAMPA, FL, May 1, 2001 - L-3 Communications (NYSE:LLL) Aviation Communications and Surveillance Systems (ACSS) provide the standard safety package for all new Embraer and Dornier aircraft. The package includes Traffic Collision Warning Systems (TCAS 2000) and Mode S Transponders.

"Demand for our products from Embraer and Dornier continues to be very strong," said Joe Hoffman, president of L-3 ACSS. "We're proud to be the supplier of safety products for these fine aircraft manufactured by these leading providers of regional jets."

ACSS products are standard onboard Embraer's current production aircraft, the ERJ-135, and ERJ-145. In addition, ACSS products are standard onboard their new development aircraft, the ERJ-140, ERJ-170 and ERJ-190.

ACSS products are standard onboard Dornier's current production aircraft, the 328 turboprop and the 328JET. In addition, ACSS products are standard onboard their new development aircraft, the 728 and 928.

L-3 ACSS is a leader in aviation surveillance systems. Its product line includes a family of Traffic Alert and Collision Avoidance Systems (TCAS), Mode S Transponders and peripheral components. TCAS reduces the potential for mid-air collisions and provides an independent and complementary supplement to the air traffic control (ATC) system. Approximately 8,000 units of ACSS's TCAS product are currently installed in commercial, corporate, and military aircraft. To learn more about L-3 ACSS, please visit the division's web site at www.L-3com.com/acss.

Headquartered in New York City, L-3 Communications is a leading merchant supplier of secure communications systems and products, avionics and ocean products, training products, microwave components and telemetry, instrumentation, space and wireless products. Its customers include the Department of Defense, selected US government intelligence agencies, aerospace prime contractors and commercial telecommunications and wireless customers.

To learn more about L-3 Communications, please visit the company's web site at www.L-3Com.com.

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.