55x Installation Manual Hot! | S-tec

: Manual Electric Trim, Altitude Pre-selector, and Remote Annunciator panels. Pacific Flying Club Installation & Wiring Requirements

The S-TEC 55X (System Fifty Five X) is a two-axis, rate-based autopilot designed to provide exceptional stability, tracking, and altitude control for general aviation aircraft. Known for its smooth performance and robust feature set—including heading hold, altitude hold, vertical speed command, and GPS/NAV tracking—the 55X is a popular upgrade. S-tec 55x Installation Manual