FAA · Supplemental Type Certificate
STC SA250CE
Installation of Woodward electronic propeller synchraphaser system.
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 (14)
- A9EA Bombardier-Rotax GmbH · DHC-6-300
- 3A25 The Cessna Aircraft Company · 340
- Miscellaneous Miscellaneous · Miscellaneous
- A2PC Mitsubishi Heavy Industries Ltd. · MU-2B-10
- A2PC Mitsubishi Heavy Industries Ltd. · MU-2B-15
- A2PC Mitsubishi Heavy Industries Ltd. · MU-2B-25
- A2PC Mitsubishi Heavy Industries Ltd. · MU-2B-36
- A2PC Mitsubishi Heavy Industries Ltd. · MU-2B-26
- A8EA The New Piper Aircraft Inc. · PA-31T
- 3A20 Raytheon Aircraft Company · E90
- A14CE Raytheon Aircraft Company · B100
- A31CE Raytheon Aircraft Company · F90
- 2A4 Twin Commander Aircraft Corporation · 690A
- 2A4 Twin Commander Aircraft Corporation · 690
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 ↗