FAA · Supplemental Type Certificate
STC SA2646WE
Installation of Lock Assembly No. 41853-101, -102, -103, -201, -202, -203, -204, -301, -302, -303, and -304
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 ↗