STC SA2822SO

Intallation of a Sky-Sign aerial advertising system

Current Reissued Aircraft Small Airplane Rev 04/26/2021 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 (10)

3A12 Textron Aviation Inc. · 172F (USAF T-41A)
3A12 Textron Aviation Inc. · 172I
3A12 Textron Aviation Inc. · 172K
3A12 Textron Aviation Inc. · 172L
3A12 Textron Aviation Inc. · 172M
3A12 Textron Aviation Inc. · 172N
3A12 Textron Aviation Inc. · 172P
3A12 Textron Aviation Inc. · 172Q
3A12 Textron Aviation Inc. · 172R
3A12 Textron Aviation Inc. · 172S

Certification basis — 14 CFR

Part 3
Part 21

Specific sections

§ 21.47
§ 21.55
§ 21.111
§ 21.113
§ 21.115
§ 21.117
§ 21.119
§ 21.120

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