STC SA74GL
FAA DRS lists SA74GL as Current · Reissued, held by Signature Flight Support Corporation, for Twin Commander Aircraft 690 and Twin Commander Aircraft 690A. Recorded change: Install wing tip recognition lights. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
Install wing tip recognition lights.
SA74GL 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: Twin Commander Aircraft 690 and Twin Commander Aircraft 690A. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
- 01Does it cover the exact Twin Commander Aircraft 690 and Twin Commander Aircraft 690A model, serial range, and configuration?
- 02Which configuration, loads, materials, inspections, and damage limits apply?
- 03Who can legally supply the design data, kit, instructions, and ICAs?
- 04What parts, labor, conformity, and return-to-service work are excluded?
Related aircraft structures STCs
Installation of Door Gas Springs in accordance with FAA approved Master Drawing List FIV-1000 Revision B dated March 13, 2010 or later FAA approved revision.
FAA holder: Fly In Vacations
Manufacture of Door Openers in accordance with Aeronautical Accessories, Inc. Report No. AA-97046, Revision A, dated April 28, 1997 or later FAA approved revisions and installation per Report No. AA-96108, Revision A, dated June 25, 1996, or Report No. AA-96064, Revision C, dated April 15, 1997, or Report No. AA-95051, Revision B, dated April 10, 1997, or later FAA approved revisions.
FAA holder: Bell Helicopter Textron Inc.
Manufacture of Baggage Floor Protectors in accordance with Aeronautical Accessories, Inc. Report No. AA-97051, no revision, dated March 27, 1997 or later FAA approved revisions and installation per Report No. AA-95046, Revision A, dated March 13, 1997, or later FAA approved revisions.
FAA holder: Bell Helicopter Textron Inc.
Installation of Adjustable Directional Trim Device on lower aft fuselage (ventral Location) in accordance with Beryl D Shannon Aviation Specialties, Inc., drawing B15001, dated May 30, 1977, or later FAA approved revision.
FAA holder: D'Shannon Products Ltd.