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The System Fifty is a two-axis autopilot which includes heading pre-select, turn command (which will give up to 90% standard rate turn), VOR / LOC tracking, back course tracking, a gain enhancement feature for tracking GPS Navigation analog left / right deviation signals, altitude hold, and pitch trim indicator lights.

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 FiftyFiveX two-axis system.

  • Same roll features/functions as System Forty
  • Altitude hold (only)
  • Pitch axis computer three ATI case-contained
  • Pitch trim annunciation
  • Control wheel altitude hold select
  • GPSS (GPS. Steering) converter
  • DG / HSI compatible
  • Manual electric trim (where STC’d)
  • Yaw Damper

  • System 50 Computer Programmer
  • Turn coordinator
  • Roll Servo
  • Pitch Servo
  • Pressure Transducer
  • Cable Assemblies
  • Installation/Hardware kit
  • STC Documentation package

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