Business & GA, Military

L-3 Standby Instrument Approved for Helicopters

By Tish Drake | February 24, 2010
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L-3 Avionics Systems received FAA Technical Standard Order (TSO) approval for its Trilogy ESI-1000 Electronic Standby Instrument (ESI on Part 27 and Part 29 rotary-wing aircraft. This all-in-one glass standby instrument is the first system of its type certified for light helicopter operations, according to the company.

“The all-glass cockpit is now possible for our fixed- and rotary-wing customers,” said Larry Riddle, vice president of business development for L-3 Avionics Systems. “Trilogy saves panel space and reduces weight for light helicopter operators. These two significant benefits combined with Trilogy’s solid-state reliability and precision make it an excellent package for this market.”

The Trilogy ESI combines attitude, altitude, airspeed and optional heading data on a 3.7-inch Active Matrix LCD display. The rotorcraft version of the Trilogy ESI is calibrated from 20 to 350 knots and -1,500 to 55,000 feet, and can detect roll rates up to 100 degrees per second. Additionally, Trilogy provides airspeed cues for critical reference airspeeds and operating ranges specific to the aircraft.

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