L-3 GH-3900 ESIS Receives TSO
L-3 Avionics Systems has received Technical Standards Order (TSO) approval from the FAA for its newest electronic standby instrument system (ESIS), the GH-3900. The unit meets Level A hardware and software standards and was designed for installation in transport category and general aviation aircraft (though not for airplanes with a gross weight below 6,000 pounds). […]