FAA · Supplemental Type Certificate
STC SA24CE
Oval passenger windows.
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 (8)
- 770 Beech Aircraft Corporation · D18C-T
- A-757 Raytheon Aircraft Company · C18 Series
- A-765 Raytheon Aircraft Company · C-45H
- A-765 Raytheon Aircraft Company · TC-45H
- A-765 Raytheon Aircraft Company · D18C
- A-765 Raytheon Aircraft Company · TC-45G
- A-765 Raytheon Aircraft Company · C-45G
- A-765 Raytheon Aircraft Company · D18S
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 ↗