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Atlas / STC / ST02947CH

FAA · Supplemental Type Certificate

STC ST02947CH

Installation and activation of a Panasonic Global Communications Suite (GCS) System in accordance with Armstrong Aerospace Master Data List, Doc. No. DC104-9043-00, Revision A, dated December 22, 2011, or later FAA approved revision.

Historical Issued Aircraft Rev 12/23/2011 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.

Certification basis — 14 CFR

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