FAA · Supplemental Type Certificate
STC SH3301SO
Installation of a Freon Air Conditioning System in accordance with Aero Aire Corporation Master Drawing List No. 500R010, Rev. 2, dated 5/26/1992, or later FAA approved revision.
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 (2)
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗