FAA · Supplemental Type Certificate
STC SA01283WI
Installation of McCauley D3A34C401/90DFA-6, -8, and -10 Propeller on Cessna Model 207 Series airplanes equipped with TCM IO-520F, IO-550F, TSIO-520-G and TSIO-520-M engines.
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 (4)
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗