FAA · Supplemental Type Certificate
STC SR04453CH
Installation of Appareo Systems LLC Stratus ES & Stratus ESG ADS-B transponder
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 (33)
- H9EU Airbus Helicopters · AS350C
- H9EU Airbus Helicopters · AS350D
- H9EU Airbus Helicopters · AS350D1
- H9EU Airbus Helicopters · AS350B
- H9EU Airbus Helicopters · AS350B1
- H9EU Airbus Helicopters · AS350B2
- H9EU Airbus Helicopters · AS350BA
- H9EU Airbus Helicopters · AS350B3
- H9EU Airbus Helicopters · EC130B4
- H9EU Airbus Helicopters · EC130T2
- R0001RD Airbus Helicopters · EC120B
- H2SW Bell Textron Canada Limited · 206
- H2SW Bell Textron Canada Limited · 206A
- H2SW Bell Textron Canada Limited · 206A-1 (OH-58A)
- H2SW Bell Textron Canada Limited · 206B
- H2SW Bell Textron Canada Limited · 206B-1
- H2SW Bell Textron Canada Limited · 206L
- H2SW Bell Textron Canada Limited · 206L-1
- H2SW Bell Textron Canada Limited · 206L-3
- H2SW Bell Textron Canada Limited · 206L-4
- H2SW Bell Textron Canada Limited · 407
- H7EU Leonardo S.p.a. · A109
- H7EU Leonardo S.p.a. · A109A
- H7EU Leonardo S.p.a. · A109A II
- H7EU Leonardo S.p.a. · A109C
- H7EU Leonardo S.p.a. · A109K2
- H7EU Leonardo S.p.a. · A109E
- H7EU Leonardo S.p.a. · A119
- H7EU Leonardo S.p.a. · A109S
- H7EU Leonardo S.p.a. · AW119 MKII
- H7EU Leonardo S.p.a. · AW109SP
- H11NM Robinson Helicopter Company · R44
- H11NM Robinson Helicopter Company · R44 II
Certification basis — 14 CFR
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗