STC ST01321WI
FAA DRS lists ST01321WI as Current · Issued, held by Kohlman Systems Research Inc., for Gulfstream Aerospace LP 1125 Westwind Astra. Recorded change: Reduced Vertical Separation Minimum (RVSM) non-group airworthiness approval of specific Gulfstream Aerospace LP Model 1125 Westwind Astra aircraft. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
ST01321WI 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: Gulfstream Aerospace LP 1125 Westwind Astra. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Related other aircraft modifications STCs
Installation of McCauley Model 4HFR34C762/94LMA-4 propellers.
FAA holder: McCauley Propeller Systems
Installation of Flight Deck Thermal Acoustic Insulation Blanket.
FAA holder: DC Aerospace Solutions LLC
Modification of the Over Head Oval Duct.
FAA holder: StandardAero Business Aviation Services, LLC
Installation of a Center Windshield.
FAA holder: Hershey Flying Services
FAA record reference
- STC number
- ST01321WI
- Product
- Aircraft · Large Multi-Engine
- Country
- United States
- Application date
- May 4, 2004
- Revision date
- May 23, 2005
- CFR references
- Part 21, Part 25