FAA · Supplemental Type Certificate
STC SA4345WE
Installation of cooling louvers in the top cowling.
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 (1)
Comments
08/27/2024 Sent for abandonment published in FR 2024-19143 page 68700, Citation 89 FR 68700
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗