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Atlas / STC / ST04394CH

FAA · Supplemental Type Certificate

STC ST04394CH

Weather Radar Upgrade in accordance with StandardAero Master Data List 1035391, Revision (B), dated December 13, 2019 or later FAA approved revision.

Historical Issued Aircraft Rev 12/17/2019 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 ↗