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The System Forty is a single-axis roll stabilization autopilot which includes heading pre-select, turn command (which will give up to 90% standard rate turn), VOR / LOC tracking, back course tracking, and a gain enhancement feature for tracking GPS Navigation analog left / right deviation signals.

To utilize GPS roll steering (GPSS) commands, an additional ST-901 GPSS converter may be required to feed the autopilot with compatible steering signals. The ST-901 GPSS converter is not required for GPSS when integrating to an Aspen EFD system or Garmin G500/600 EFIS.

A compatible DG or HSI is required for the heading pre-select function or when adding the optional ST-901 GPSS converter.

Building block concept allows upgrading to a System Fifty or FiftyFiveX two-axis system.

  • 3” ATI panel-mounted
  • Internal lighting
  • Roll axis computer three ATI case-contained
  • Heading preselect and hold**
  • Turn command in “STB” roll stabilization mode
  • Low and high gain VOR/LOC/GPS tracking (track only)
  • Back course (REV) mode
** Operational if heading system (e.g., DG with heading bug) is installed and active.
Options:
  • Manual Electric Trim (Autotrim not available)
  • ST-901 GPSS Converter

  • System 40 Computer/Programmer
  • Turn coordinator
  • Roll Servo
  • Cable Assemblies
  • Installation/Hardware kit
  • STC Documentation package

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