Skip to content

Atlas / STC / ST03271CH

FAA · Supplemental Type Certificate

STC ST03271CH

Upgrade existing Honeywell Mark V Enhanced Ground Proximity Warning System software level and activate the Runway Awareness Advisory System (including enhanced features known as SmartRunway SmartLanding)

Current Reissued Aircraft Large Airplane Rev 03/09/2018 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

Specific sections

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