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Atlas / STC / SA4103WE

FAA · Supplemental Type Certificate

STC SA4103WE

Installation of a replacement flexible fuel cell in the wing of the Beech 33, 35, 36. aircraft

Current Reissued Aircraft Small Airplane Rev 02/17/2026 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.

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