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Atlas / STC / SA121EA

FAA · Supplemental Type Certificate

STC SA121EA

Install Cleveland wheel P/N 40-46 Rev. K and brake P/N 30-31, Rev. L.

Current Reissued Aircraft Small Airplane Rev 09/19/2022 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 (3)

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