Powerful graphics processing, easy-to-read displays

With the incorporation of a powerful graphics processor and anti-aliased graphics, the EHSI-4000 provides superior capabilities for today’s military aircraft. The EHSI-4000 offers an easy-to-read display as well as proven high reliability. The unit incorporates an Active Matrix Liquid Crystal Display (AMLCD) that is visible in direct sunlight as well as a dark cockpit. A built-in photocell on the front bezel, when used in conjunction with the setting of the aircraft bus, automatically adapts to ambient lighting conditions.

Combining systems strengthens back up

When combined with the ESIS GH-3000, the EHSI-4000 provides flight crews with comprehensive backup of air data, attitude and navigation information. The “wraparound” capabilities of this coupled arrangement allow information sharing to ensure consistent, reliable and redundant flight information. Sufficient redundancy is designed into this combination so that the loss of either unit will still provide important navigation information.




Less than 3 lb.


28 VDC @ 1.5 amps
26 VAC
400 Hz
0 to 4.5 VAC/DAC bus


Tested to MIL-STD-461/-462/-810


NVIS display brightness mode switch
0.04 fL to 150 fL

Product support & sales

Facility/Shipping/Mailing Address:
5353 52nd Street, S.E.
Grand Rapids, MI 49512-9704
Main Phone Line: +1 (616) 949-6600
Fax: +1 (616) 977-6898

Order Administration/Sales/General Inquiries:
Phone: +1 (800) 253-9525 or
+1 (616) 949-6600

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

Technical Support:
Phone: +1 (616) 949-6600
AOG Hotline: +1 (800) 453-0288 or +1 (616) 949-6600

Technical Publications:


Cage Code/Federal Supply Code: 25583

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