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.
Recorded modification
What the FAA record covers
Replace original split flaps with Fowler flaps.
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
- 01Does it cover the exact Textron Aviation 340 and Textron Aviation 340A model, serial range, and configuration?
- 02Which configuration, parts, installation data, limitations, and ICAs apply?
- 03Who can legally supply the design data, kit, instructions, and ICAs?
- 04What parts, labor, conformity, and return-to-service work are excluded?
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Installation of a Spectrolab SX-5 searchlight.
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Installation of Alternate Lighting System.
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