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Atlas / STC / ST04233AT

FAA · Supplemental Type Certificate

STC ST04233AT

Replacement of the inner aluminum barrel of the engine inlet cowl, with an inlet barrel of carbon graphite sandwich construction, to provide a solution for in-service corrosion

Current Issued Aircraft Small/Large Airplane Rev 10/26/2015 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.

Applicable aircraft (1)

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 ↗