STC SA02620SE

Installation of Butterfield Industries Air/Oil Separator System, kit Part Number BI 8055-1

Historical Reissued Aircraft Small Airplane Rev 12/20/2018 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.

Applicable aircraft (3)

3A20 Textron Aviation Inc. · C90A
3A20 Textron Aviation Inc. · C90GT
3A20 Textron Aviation Inc. · C90GTi

Certification basis — 14 CFR

Part 21
Part 23

Specific sections

§ 21.47
§ 21.120

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