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Atlas / STC / SA01866WI

FAA · Supplemental Type Certificate

STC SA01866WI

Installation of Garmin GFC 500 Autopilot with Electronic Stability and Protection

Historical Amended Aircraft Small Airplane Rev 04/27/2021 View PDF on drs.faa.gov ↗

What is an STC?

A Supplemental Type Certificate authorizes a major modification or alteration to an FAA-certificated aircraft. STCs are how operators legally install new avionics, change fuel systems, add floats, swap engines, etc. — every change beyond a minor modification needs one.

Applicable aircraft (142)

+ 92 more aircraft

Certification basis — 14 CFR

Specific sections

The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗