S-tec 55x Installation Manual [work] -

With power off, measure resistance between each servo motor lead and ground. The manual specifies >1 MOhm. Any lower indicates a short.

Dedicate a separate, clearly labeled, resettable circuit breaker (typically 5-Amp for 14V systems, 3-Amp for 28V systems) to the autopilot system.

Installed in the aft fuselage to control the elevators.

Torque values must match the exact slip limits listed in the aircraft-specific STC amendment to ensure the pilot can safely override the autopilot in an emergency. Ground Test Protocol S-tec 55x Installation Manual

The System 55X integrates with a wide variety of GPS, HSI, and EFIS systems via digital ARINC 429 buses or traditional analog steering lines (Left/Right, Up/Down deviations).

Wire the standard Left/Right and Up/Down deviation signals along with Nav Warning flags from your VOR/LOC receiver for ILS approaches. 5. Post-Installation Ground Setup and Calibration

The S-TEC System 55X installation manual is a proprietary, FAA-approved technical document. It serves as the primary regulatory framework for avionics technicians executing an Supplemental Type Certificate (STC) installation. With power off, measure resistance between each servo

Verify the yoke-mounted disconnect button kills power to the servos immediately. 🛩️ Flight Calibration

Conduct a static system vacuum decay test; inspect transducer pneumatic fittings.

Re-tension the pitch servo bridle cable; check static plumbing for leaks. Miscalibrated turn coordinator null offset Ground Test Protocol The System 55X integrates with

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)

The following steps outline the general installation procedures for the S-Tec 55X: