FAA · Supplemental Type Certificate
STC SR02445SE
Installation of P178 Failsafe Audio Mixer
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 (30)
- H88EU Airbus Helicopters Deutschland GmbH · EC135 P1
- H88EU Airbus Helicopters Deutschland GmbH · EC135 P2
- H88EU Airbus Helicopters Deutschland GmbH · EC135 P2+
- H88EU Airbus Helicopters Deutschland GmbH · EC135 T1
- H88EU Airbus Helicopters Deutschland GmbH · EC135 T2
- H88EU Airbus Helicopters Deutschland GmbH · EC135 T2+
- H9EU Airbus Helicopters · AS-350B
- H9EU Airbus Helicopters · AS-350B1
- H9EU Airbus Helicopters · AS-350B2
- H9EU Airbus Helicopters · AS-350B3
- H9EU Airbus Helicopters · AS-350BA
- H9EU Airbus Helicopters · AS-350C
- H9EU Airbus Helicopters · AS-350D
- H9EU Airbus Helicopters · AS-350D1
- H11EU Airbus Helicopters · AS355E
- H11EU Airbus Helicopters · AS355F
- H11EU Airbus Helicopters · AS355F1
- H11EU Airbus Helicopters · AS355F2
- H11EU Airbus Helicopters · AS355N
- H11EU Airbus Helicopters · AS355NP
- H9EU Airbus Helicopters · EC 130 B4
- H9EU Airbus Helicopters · EC 130 T2
- H2SW Bell Helicopter Textron Canada Limited · 206A-1 (OH-58A)
- H2SW Bell Helicopter Textron Canada Limited · 206A
- H2SW Bell Helicopter Textron Canada Limited · 206B
- H2SW Bell Helicopter Textron Canada Limited · 206L-1
- H2SW Bell Helicopter Textron Canada Limited · 206L-3
- H2SW Bell Helicopter Textron Canada Limited · 206L-4
- H2SW Bell Helicopter Textron Canada Limited · 206L
- H2SW Bell Helicopter Textron Canada Limited · 407
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 ↗