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Atlas / STC / SA3-423

FAA · Supplemental Type Certificate

STC SA3-423

Installation of CT-3000 tail ski on airplanes equipped with Scott 3200 or 3400 tail wheels.

Current Reissued Aircraft Small Airplane Rev 02/09/2023 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 (43)

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 ↗