: Includes GPS Roll Steering (GPSS), Vertical Speed control, and precision approach capability (LPV, LNAV/VNAV). 2. Mandatory Installation Requirements Installation of the S-TEC 55X is governed by a Supplemental Type Certificate (STC) specific to the aircraft serial number. Certification : Installation should only be performed by FAA-certified S-TEC Dealers
Verify the yoke-mounted disconnect button kills power to the servos immediately. 🛩️ Flight Calibration
