FAA · Supplemental Type Certificate
STC ST03369CH
Certification of the aircraft data link system used for communication supporting Air Traffic Services (ATS) and installation of single (standalone #3) or dual Universal Avionics UNS-1Fw Flight Management System and UniLink UL-801 Communications Management Unit
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 (1)
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗