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Atlas / STC / SA4911NM

FAA · Supplemental Type Certificate

STC SA4911NM

Relocation of first six rows of passenger seats and passenger service units on the right side of the airplane and relocation of misc. emergency equipment into a overhead stowage bin.

Current Reissued Aircraft Large Multi-Engine Rev 11/28/2018 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

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