S-tec 55x Installation Manual ◎
The is far more than a set of instructions—it is the binding contract between the installer, the airframe, and the FAA. A correct installation yields one of the smoothest, most reliable rate-based autopilots ever certified. A shortcut-filled installation yields a squawk-list nightmare.
Probable Cause : Bridle cables are too loose, or the turn coordinator is loose in its panel cutout.
Verify that the autopilot completely disengages when pressing: The AP DISC switch on the control yoke. The Avionics Master switch. The dedicated Autopilot Circuit Breaker. Flight Testing and Troubleshooting S-tec 55x Installation Manual
The S-TEC 55X is a 2-axis, rate-based autopilot requiring specialized installation by authorized dealers, with documentation, such as the 42-page installation service instruction, typically provided upon system purchase. Installation requires specific STCs, careful component mounting, and extensive ground/flight testing, including self-tests and control checkouts. For product details, visit Genesys Aerosystems Genesys Aerosystems S-TEC 55X | Genesys Aerosystems | Mineral Wells, TX
A proper installation ensures precise flight tracking, smooth servo engagement, and long-term hardware reliability. This comprehensive guide breaks down the essential technical phases, wiring configurations, and calibration steps typically detailed in the official S-TEC 55X installation documentation. 1. Pre-Installation Planning and Airframe Compatibility The is far more than a set of
The addition of the programmer/computer, servos, brackets, and bridal cables will alter the aircraft’s empty weight and center of gravity. A new weight and balance calculation must be performed post-installation.
Before beginning any physical work, a thorough review of the aircraft’s current configuration and the specifics of the S-TEC 55X system is essential. The 55X is more than just a computer; it integrates with several aircraft systems to provide full functionality. A typical installation includes a flight guidance programmer/computer, an altitude encoder, an altitude selector/alerter, a turn coordinator, and a Heading System (DG or HSI). Probable Cause : Bridle cables are too loose,
Use a calibrated tensiometer to set the bridle cable tension precisely to the specification listed in the installation manual for that specific aircraft model. Incorrect tension leads to sluggish response (too loose) or control binding (too tight).
The following steps outline the general installation procedures for the S-Tec 55X: