Commercial Gyros

AI-330 Self-Contained 2” Attitude Instrument

The A330 is a compact, self-contained attitude instrument that fits in a standard 3-ATI-instrument cutout. The AI-330 features an optional integral inclinometer (slip/skid indicator) and mechanical erection with manual caging. Direct mechanical linkage eliminates electrical servo response lag. Self-contained lateral and fore/aft acceleration compensation is standard on the AI-330.


  • 28 VDC operation (18 VDC to 30 VDC)
  • ARINC 408A 3ATI clamp mount (flange-mount available)
  • Blue/white internal lighting
  • Design compatibility with EFIS displays
  • Power off warning flag
  • Wheel speed monitoring
  • TSO-C4c

AI-804 Self-Contained 2” Standby Gyro Horizon

The AI-804 is a compact, case-contained 2″ gyro horizon indicator that provides up to nine minutes of usable attitude information after complete loss of electrical power. The AI-804 is used on fixed- and rotary-wing aircraft in both military and commercial applications to ensure unprecedented reliability and durability at a low cost. The stand-alone design of the AI-804, developed by L3Harris using advanced engineering techniques, eliminates the need for electronic components associated with remote systems. The direct mechanical linkage provides exceptional reliability.


  • 28 VDC operation
  • 360° roll, 360° pitch with controlled precession
  • Red or white internal lighting
  • Manual caging for fast, reliable alignment
  • Power-off warning flag
  • TSO-C4c
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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