The system is "Rate Based." The installation manual emphasizes that the Turn Coordinator must be isolated from the aircraft’s vacuum system (if equipped) as it is electrically powered to ensure autopilot functionality even during vacuum system failures.
Install the roll servo and pitch servo using the appropriate STC bracket kits.
The 55X is a rate-based autopilot. It derives its primary roll data from a modified, electric turn coordinator. This instrument provides the primary error signal for stabilization. 3. Servo Actuators (Pitch, Roll, and Trim)
Mounted on the forward cabin bulkhead or radio rack. S-tec 55x Installation Manual
: Power must be routed through a dedicated, resettable circuit breaker (typically 5-amp or 7.5-amp, depending on the voltage system).
The S-TEC 55X must be installed by certified avionics shops or FAA-certified mechanics holding the appropriate documentation.
Strict adherence to grounding points is required to prevent interference; solder sleeves are recommended for neat terminations. The system is "Rate Based
: Includes a pressure transducer for altitude hold functions.
Confirming the pitch servo smoothly captures a selected altitude without overshooting. Documentation and Logbook Entry
Run shielded twisted-pair wire (MIL-W-22759 or equivalent) for all signal paths, including gyro lines and servo tachometer lines. It derives its primary roll data from a
The S-TEC 55X is installed under an STC. You must ensure your specific aircraft make, model, and serial number are listed on the S-TEC (Genesys Aerosystems) Approved Model List (AML).
Whether you are an avionics technician, an experimental aircraft builder, or an aircraft owner looking to understand your upcoming shop visit, this guide serves as a comprehensive overview of the requirements, procedures, and best practices. 1. System Overview and Major Components
Installing the is a complex procedure that must be performed by authorized S-TEC dealers or technicians with appropriate FAA certification. This draft guide outlines the core components, wiring standards, and checkout procedures typically found in the installation manual. 1. System Components & Layout
The S-Tec 55X installation manual provides troubleshooting guides and maintenance procedures for common issues, including: