STC ST09011SC
FAA DRS lists ST09011SC as Current · Reissued, held by Sierra Industries Ltd., for Textron Aviation 500, Textron Aviation 550, and Textron Aviation S550. Recorded change: Installation of a pilot's, control wheel mounted, alternate gear horn silence switch. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
ST09011SC 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 500, Textron Aviation 550, and Textron Aviation S550. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
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