FAA · Supplemental Type Certificate
STC SA02187AK
Fabrication and installation of the Airframes, Inc., 4-inch wider frame assembly/fuselage, P/N AF18-4, in accordance with Airframes, Inc., Master Data List AF18-4, Revision A, dated April 8, 2003, or later FAA approved revisions.
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 ↗