Horizontal Situation Indicator: HSI-423

Horizontal Situation Indicators (HSI) are designed for helicopter and fixed-wing aircraft applications. All important information concerning the aircraft's position relative to ground-based navigation aids is presented in one convenient display.
The HSI-423 family of dual servo-bearing pointer, 4 inch, Horizontal Situation Indicators (HSI) are designed for helicopter and fixed wing aircraft applications. All critical information concerning the aircraft’s position relative to ground-based navigational aids is presented in one convenient display.
Dual servo-bearing pointer display
Dedicated autopilot outputs
Isolated bootstrap
Available with side mounted D-sub connection or rear-mounted MS circular style
Also available in U.S. Night Vision Goggle (NVG) compatible