FAA · Supplemental Type Certificate
STC ST04417CH
Provisional installation of the Envoy Data Link with Iridium system for Aircraft Communications Addressing and Reporting System (ACARS) and Controller Pilot Data Link Communication (CPDLC) in accordance with Global Aerospace Design Corp. Master Drawing List 18GR164-MDL-2, Revision E, dated June 27, 2019, or later FAA approved revision.
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 ↗