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S-TEC 55X

Full-Function, Two-Axis Analog Autopilot with Roll & Pitch, and optional Yaw on some makes and models.

Features

  • Case contained, radio stack mount
  • Heading preselect and hold*
  • Altitude hold with optional automatic electric trim
  • Numerous NAV modes (GPS, VOR, ILS, LOC)
  • Intercept modes – HDG to NAV, NAV to APR & HDG to APR
  • Precise Approach control for LPV, LNAV, VNAV, LOC, ILS, & VOR
  • Vertical speed control
  • Altitude preselect**
  • Much more…

* Requires heading system with a heading bug
** Requires a baro corrected source

Key Benefits

  • High Performance: Fully IFR-capable, with nav and glide slope intercepts that make it ideal for approaches.
  • GPS Roll Steering: When coupled to a GPS navigator, the 55X does not follow CDI movement but the commands directly from the navigator to anticipate turns.
  • Control Wheel Steering: Hand-fly aircraft and then let the autopilot take over to hold the existing turn rate and vertical speed.
  • Hundreds of STC’s: From light singles through piston twins.
  • Optional Altitude Preselect*, Electric Trim, Yaw Damper
  • Compatibility: The S-TEC 55X is a 2-Axis (3-Axis available on some models) Flight Control System, with optional Automatic Pitch Trim. Whether you have advanced glass EFIS displays or the traditional 6-pack steam gauges, the S-TEC 55X supports a wide variety of cockpit setups

*Requires additional Equipment

Specifications

Dimensions

Width

6.25" (159mm)
Height 1.50" (38mm)
Depth 9.46" (240mm)
Weight 2.7 lbs (1.22 kg) (Control computer only)
TSOs TSO-C9C (Automatic Pilots)
TSO-C52a (Flight Director Equipment)
Hardware RTCA DO-160C to meet TSO-C198
Software RTCA DO-178B

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