FAA · Supplemental Type Certificate
STC SA799GL
Modify airplane to fly on unleaded automotive gasoline, 87 minimum antiknock index.
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 (9)
- A-777 Raytheon Aircraft Company · E35
- A-777 Raytheon Aircraft Company · F35
- A-777 Raytheon Aircraft Company · G35
- A-777 Raytheon Aircraft Company · 35R
- A-777 Raytheon Aircraft Company · 35
- A-777 Raytheon Aircraft Company · B35
- A-777 Raytheon Aircraft Company · D35
- A-777 Raytheon Aircraft Company · A35
- A-777 Raytheon Aircraft Company · C35
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 ↗