FAA · Supplemental Type Certificate
STC SA4502NM
Installation of Lycoming IO-360-A1A, -A1B, -A1B6, or -A1B6D, -A3B6, or -A3B6D engine and Hartzell HC-C2YK-1B/7666A-2 or HC-C2YR-1B-7666A-2 propeller
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 (5)
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗