GH-4200 Electronic Standby Instrument Systems

Standby instrumentation for military aircraft

When military aircraft must operate in challenging environments, the go-to back-up system is the GH-4200 Electronic Standby Instrument System (ESIS). The GH-4200 represents the next generation of standby technology for demanding high-performance military aircraft. The unit contains internal attitude, air data and accelerometer sensors and is capable of receiving turn rate data, as well as analog deviation data from a navigation receiver.

ESIS GH-4200 Key Features:

  • Designed for single and tandem high-performance aircraft
  • Configurable display of flight cues
  • 3-ATI self-contained unit weighs only 3 lb. (1.36 kg)
  • Repeater display available for numerous cockpit configurations

Compact design provides installation options

The GH-4200 system’s compact and rugged design allows it to be installed virtually anywhere in the cockpit, providing valuable airspeed, altitude, attitude, turn rate and vertical speed data to the pilot(s) in the event of a panel failure. The GH-4200’s Flat-panel Active Matrix LCD is sunlight-readable and NVG-compatible.

A flexible, seamless solution

The GH-4200 supports multiple input/output data transfer protocols, including ARINC 429, RS-232, discrete and analog signals. It is designed to employ field-loadable software. And the flexible system works seamlessly with new digital cockpit avionics as well as older analog systems.

Configurable for single- or tandem-pilot aircraft

The 3-ATI self-contained, solid-state GH-4200 is configurable for single and tandem pilot aircraft, with a repeater display (GHR-4000) available for multiple cockpits. The GH-4200 is equipped with high-rate attitude sensors and supersonic air data sensors.

Specs GH-4200 GHR-4000* (Repeater Display)
Dimensions (L x W x H)** 9.92 in.  x 3.50 in. x 3.50 in. (250 mm  x 89 mm  x 89 mm)
Weight 3.0 lb. max (1.36 kg)
  • ARINC 429 Receivers (2) and Transmitter (1)
  • RS-232 Serial Bus
  • Analog Inputs (3) and Outputs (3)
  • Discrete Inputs (5) and Output (1)
  • Pneumatic Pressure Ports
  • ARINC 429 Receivers (2) and Transmitter (1)
  • RS-232 Serial Bus
  • Analog Inputs (3) and Outputs (3)
  • Discrete Inputs (5) and Output (1)
Power +28 VDC, nominal +28 VDC, nominal

* The GHR-4000 Repeater relies on the GH-4200 for data and contains no internal sensors.

** Includes knob and connector.

Product Support

Technical Support:
Phone: +1 (616) 949-6600
AOG Hotline: +1 (800) 453-0228 or +1 (616) 949-6600
Ft. Lauderdale AOG: +1 (954) 629-8689

Repair and Overhaul Administration:
Phone: +1 (800) 253-9525
Fax: +1 (616) 977-6895

Current L3 product owners and L3 Authorized Repair Facilities needing to access the latest versions of our Technical Publications and Service Bulletins are encouraged to register:

Once you are registered you will be able to search our Technical Publications and Service Bulletin library.