STC SA689NW
FAA DRS lists SA689NW as Current · Reissued, held by Sierra Industries Inc, for Textron Aviation 500. Recorded change: Installation of transponder identification switch in the left hand control wheel. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
Installation of transponder identification switch in the left hand control wheel.
SA689NW 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. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
- 01Does it cover the exact Textron Aviation 500 model, serial range, and configuration?
- 02Which part numbers, software versions, interfaces, and manual changes 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 modified Aviation Communication & Surveillance Systems (ACSS) RCZ-852 Mode S Transponder System with Secondary Surveillance Radar (SSR) Mode S Enhanced Surveillance (EHS) capability and a Gables G7524-() Flight Identification control panel.
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