STC SA2775SO

Installation of an emergency induction air door in accordance with Aircraft Specialist Installation Instructions, Alternate Air Door Adapter, dated April 30, 1990, or later FAA approved revision and Drawing Nos. AAD 16670-1, revised April 21, 1990; AAD 16670-2, revised April 21, 1990; and AAD16670-3, dated April 21, 1990, or later FAA approved revisions.

Current Reissued Aircraft Single-Engine Rev 10/04/2011 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 (2)

Certification basis — 14 CFR

Specific sections

Sec. 111
Sec. 113
Sec. 115
Sec. 117
Sec. 119
Sec. 120
§ 21.47

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