STC SA7975SW-D
FAA DRS lists SA7975SW-D as Current · Reissued, held by RAM Aircraft, Limited Partnership, for Textron Aviation 335, Textron Aviation 340, and Textron Aviation 340A. Recorded change: Option 1: Install Vortex Generators on vertical stabilizer in accordance with RAM Drawing No. 1474 Rev. B. dated March 4, 1991 or later FAA approved revision. Option 2: Same as Option 1, except no change in airspeeds; Supplemental Flight Manual not required. Option 3: Install vortex generators on vertical stabilizer and wing top. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
SA7975SW-D 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 335, Textron Aviation 340, and Textron Aviation 340A. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Related aircraft structures STCs
Installation of wing external stores attach points on the lower surface of both wings.
FAA holder: Phoenix Air Group Inc.
FAA record reference
- STC number
- SA7975SW-D
- Product
- Aircraft · Small Airplane
- Country
- USA
- Application date
- December 13, 1990
- Revision date
- March 10, 2008
- CFR references
- Part 23