Aviation's Panel Mount Avionics Installation Leader

Now you can fly an entire flight plan hands-free with the cutting edge technology of the DAC International GDC31 Roll Steering Converter. This autopilot accessory produces a Roll Sum Steering (RSS) signal from the RS-232 or ARINC 429 data available from your GPS receiver.

The GDC31 implements the same steering law used for years in Inertial Navigation Systems to guide air transport aircraft around the world. And with the advent of new and upgraded GPS that comply with the WAAS TSO, the GDC31 can provide roll steering outputs to fly procedure turns, holding patterns, arc approaches and direct-to functions. Using the GDC31 annunciator/selector switch, simply select between heading mode and GPS mode. In GPS mode, the GDC31 continually provides the correct GPS enroute flight path and intercept angles to your autopilot’s heading channel. You get pinpoint course accuracy with no more manual heading bug changes, no more course wiggles, no more overshoot when changing direction at waypoints. In the heading mode, the autopilot operates as always, tracking the heading bug wherever you set it.

The GDC31 interfaces with S-TEC, King, Century, and other autopilots, and provides our customers with an affordable way to retrofit existing aircraft systems with state of the art capability. The GDC31 comes complete with the annunciator / switch, connector and accessories. So relax a bit, spend more heads-up time. Let the GDC31 smoothly guide you from enroute all the way through approach.

  • Dimensions (RSC): 1.25"H x 5.22"W x 3.54"D (width includes mounting flange)
  • Dimensions (ACU): 0.753”H x 0.753”W x 1.99”
  • Weight (RSC): 0.4 lb
  • Weight (ACU): 0.05 lb

  • 1049‐4000‐03 Roll Steering Converter, ARINC 429 RX
  • 1049‐4200‐20 Install Kit
  • 1049‐4201‐20 Annunciator w/14 & 28 volt lamps

Optional Isolation Coupler:

  • 1049‐4801‐01 Isolation Coupler
  • 1049‐4200‐50 Install Kit

California Residents:

Prop 65 Warning: This product may contain chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm.