STC SA474NW
FAA DRS lists SA474NW as Current · Reissued, held by Sierra Industries Inc, for Textron Aviation 340 and Textron Aviation 340A. Recorded change: Replace original split flaps with Fowler flaps. Snapshot dated June 30, 2026.
FAA-listed holder
Aircraft configurations
2
FAA revision date
FAA status
Current · Reissued
Recorded modification
What the FAA record covers
SA474NW 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 340 and Textron Aviation 340A. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
Related other aircraft modifications STCs
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Installation of a Spectrolab SX-5 searchlight.
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Installation of Alternate Lighting System.
FAA holder: Aero Dynamix Inc.