FAA · Supplemental Type Certificate
STC ST178CH
Installation of a BFGoodrich Aerospace Jet Electronics and Technology, standby attitude indicator and power supply.
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 (19)
- 7A1 Fairchild Industries Inc. · FH-227-B
- 7A1 Fairchild Industries Inc. · FH-227-C
- 7A1 Fairchild Industries Inc. · FH-227-D
- 7A1 Fairchild Industries Inc. · FH-227-E
- 7A1 Fairchild Industries Inc. · F27-B
- 7A1 Fairchild Industries Inc. · F27-M
- 7A1 Fairchild Industries Inc. · F27
- 7A1 Fairchild Industries Inc. · F27-J
- 7A1 Fairchild Industries Inc. · F27-G
- 7A1 Fairchild Industries Inc. · FH-227
- 7A1 Fairchild Industries Inc. · F27-A
- 7A1 Fairchild Industries Inc. · F27-F
- A-817 Fokker Services · F.27 Mark 700
- A-817 Fokker Services · F.27 Mark 100
- A-817 Fokker Services · F.27 Mark 200
- A-817 Fokker Services · F.27 Mark 300
- A-817 Fokker Services · F.27 Mark 400
- A-817 Fokker Services · F.27 Mark 600
- A-817 Fokker Services · F.27 Mark 500
Certification basis — 14 CFR
Specific sections
- 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 ↗