Contact: Michelle Stevenson
Marketing Manager
L-3 Avionics Systems
michelle.stevenson@L-3com.com
616-285-4239

L-3 Avionics’ Trilogy™ Receives TSO and AML STC

All-Glass Part 23 Cockpit Now Possible

EAA AIRVENTURE, OSHKOSH, Wisc., July 27, 2009 – L-3 Avionics Systems announced today that it
has received Technical Standard Order (TSO) Authorization and an Approved Model List Supplemental
Type Certificate (AML STC) from the FAA for its new Trilogy™ ESI-1000 Electronic Standby Instrument.
Designed as a backup for glass cockpit avionics, Trilogy is the first solid-state integrated standby system
created specifically for Part 23 aircraft. The instrument will be on display at EAA AirVenture, Hangar C,
Booth 3100, July 27 through August 2.

“The AML STC allows the Trilogy ESI to be installed in a variety of cockpits. Now, most Part 23 aircraft
are candidates for Trilogy, which can replace the old standby technology with glass,” said Larry Riddle,
vice president of business development for L-3 Avionics. “We’re looking forward to seeing numerous allglass
piston and turbo-prop aircraft in the skies—something Trilogy makes possible for the first time.”

Trilogy combines attitude, altitude, airspeed and optional heading data on a clear, 3.7-inch diagonal
Active Matrix LCD display. The instrument fits easily into a standard 3–ATI mounting cutout. With an
integrated air data computer, solid-state attitude sensor and optional external magnetometer, Trilogy
presents accurate flight information independently of other systems. In the event of a primary glass
failure, Trilogy facilitates a smooth transition from primary to standby instrument because it provides a
common format to today’s primary flight display. It enhances safety by reducing workload and making the
transition easier for the pilot.

An ambient light sensor is integrated for automatic brightness control on both the screen and keyboard.
Trilogy units will be calibrated to 400 knots and 55,000 feet, with the ability to store aircraft configuration
and options at time of installation. The model will be available through OEMs as well as for retrofit to
modernize both glass and traditional cockpit configurations.

Trilogy was developed from L-3 Avionics Systems’ advanced knowledge base and performance in
strapdown attitude determination, which has made the company a leader in electronic standby instrument
systems for high-end aircraft. Now, Trilogy makes this technology a smart and affordable option for all
general aviation pilots.

L-3 Avionics Systems has been helping pilots fly for more than 45 years. The company provides a wide
array of avionics technologies designed to improve situational awareness and enhance safety, such as
the GH-3000 electronic and J.E.T.® standby instruments, the SkyWatch® Collision Avoidance System,
the Stormscope® Weather Mapping System, the SmartDeck Integrated Flight Controls and Display
System and the new Trilogy™ Electronic Standby Instrument, among others.

For more information, please visit the company’s Web site at http://www.l-3avionics.com/.

Headquartered in New York City, L-3 Communications employs over 66,000 people worldwide and is a
prime contractor in aircraft modernization and maintenance, C3ISR (Command, Control, Communications,
Intelligence, Surveillance and Reconnaissance) systems and government services. L-3 is also a leading
provider of high technology products, subsystems and systems. The company reported 2008 sales of
$14.9 billion.

To learn more about L-3, please visit the company’s Web site at http://www.l-3com.com/.

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