Before cutting metal or running wires, technicians must verify the specific installation eligibility for the target aircraft. 1. Supplemental Type Certificate (STC) Documentation
To legally complete the installation under FAA regulations, the installing technician or repair station must finalize the administrative paperwork:
Route the main autopilot harness, ensuring separation from radios and high-power cables to prevent interference. S-tec 55x Installation Manual
An installation manual for the S-TEC 55X autopilot is a highly technical, FAA-regulated document essential for certified avionics technicians. Because autopilot installation constitutes a major alteration to an aircraft, it requires strict adherence to the manufacturer's Supplemental Type Certificate (STC) data, wiring diagrams, and structural blueprints.
Use the correct tension specified in the S-TEC airframe-specific kit. Before cutting metal or running wires, technicians must
The is not just a technical guide; it is a Form 37-approved document supporting an FAA Supplemental Type Certificate (STC). This means:
The S-TEC 55x requires analog left-right deviation (DC voltage) from a NAV receiver or GPS. The manual provides interface diagrams for: An installation manual for the S-TEC 55X autopilot
Detailed procedures for installing the wiring, connecting power sources, and mechanically integrating the system components into the aircraft.
: Ground wires must be kept as short as possible (not exceeding 8" for shield terminations). Connector Pinout Highlights Pins 36 & 37
Always refer to the specific, revision-controlled installation manual provided with the specific Supplemental Type Certificate (STC) for your aircraft model.
Connect the system to the Heading Bug output of the HSI or DG. This requires proper scaling of the heading error gradient (typically 150 mV per degree).