STC ST03022AT

Installation of a Sandel Model ST3400 Terrain Awareness and Warning System (TAWS).

Current Reissued Aircraft Large Multi-Engine Rev 12/08/2022 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 (4)

A31SO Embraer S.A. · EMB-120
A31SO Embraer S.A. · EMB-120ER
A31SO Embraer S.A. · EMB-120FC
A31SO Embraer S.A. · EMB-120QC

Certification basis — 14 CFR

Part 21
Part 21
Part 25

Specific sections

§ 21.47
§ 21.120
Sec. 111
Sec. 113
Sec. 115
Sec. 117
Sec. 119
Sec. 120

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