FAA · Supplemental Type Certificate
STC ST03369CH
Certification of the aircraft data link system used for communication supporting Air Traffic Services (ATS) and installation of an ICG Iridium Satcom, installation of the Universal Avionics UniLink® UL-801 Communications Management Unit, and UNS-1(-)w Flight Management System(s)
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 (4)
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗