STC SA1921SW
FAA DRS lists SA1921SW as Current · Amended, held by Wall Colmonoy Corp, for Textron Aviation 172, Textron Aviation 172A, and Textron Aviation 172B, and 18 more aircraft configurations. Recorded change: Installation of Exhaust System Muffler Assembly. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
SA1921SW identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.
Applicability
Aircraft named in FAA DRS
Named aircraft: Textron Aviation 172, Textron Aviation 172A, and Textron Aviation 172B, and 18 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
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Related engine and powerplant STCs
Installation of left hand side nacelle fuel cell assembly.
FAA holder: Floats & Fuel Cells
APU exhaust door modification.
FAA holder: L-3 Communications Integrated Systems LP