FAA · Supplemental Type Certificate
STC ST00366WI
Installation of Keddeg Company P/N 21BC115 Coalescer Assembly
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 (17)
- 2A15 Lockheed Martin Corporation · 1329-25
- A10SW Mitsubishi Heavy Industries Ltd. · MU-2B-25
- A10SW Mitsubishi Heavy Industries Ltd. · MU-2B-26
- A10SW Mitsubishi Heavy Industries Ltd. · MU-2B-26A
- A10SW Mitsubishi Heavy Industries Ltd. · MU-2B-35
- A10SW Mitsubishi Heavy Industries Ltd. · MU-2B-36
- A10SW Mitsubishi Heavy Industries Ltd. · MU-2B-36A
- A10SW Mitsubishi Heavy Industries Ltd. · MU-2B-40
- A10SW Mitsubishi Heavy Industries Ltd. · MU-2B-60
- A28CE Textron Aviation Inc. · 441
- A22CE Textron Aviation Inc. · 500
- A27CE Textron Aviation Inc. · 501
- A22CE Textron Aviation Inc. · 550
- A27CE Textron Aviation Inc. · 551
- A22CE Textron Aviation Inc. · 560
- A9NM Textron Aviation Inc. · 650
- A22CE Textron Aviation Inc. · S550
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 ↗