FAA · Supplemental Type Certificate
STC SR04403NY
Installation of the Trig Avionics TT22 ADS-B Transponder System
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 (11)
- H10SW Bell Textron Inc. · 214ST
- H1SW Bell Textron Inc. · 204B
- H1SW Bell Textron Inc. · 205A
- H1SW Bell Textron Inc. · 205A-1
- H1SW Bell Textron Inc. · 205B
- H4SW Bell Textron Inc. · 212
- H4SW Bell Textron Inc. · 412
- H4SW Bell Textron Inc. · 412CF
- H4SW Bell Textron Inc. · 412EP
- H6SW Bell Textron Inc. · 214B
- H6SW Bell Textron Inc. · 214B-1
Certification basis — 14 CFR
Specific sections
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗