STC SA5921NM
FAA DRS lists SA5921NM as Current · Reissued, held by BLR Aerospace LLC., for Piper Aircraft PA-31-325. Recorded change: Vortex generators manufactured IAW Boundry Layer Research Document AA1126 and installed.. Snapshot dated June 30, 2026.
FAA-listed holder
Aircraft configurations
1
FAA revision date
FAA status
Current · Reissued
Recorded modification
What the FAA record covers
SA5921NM 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: Piper Aircraft PA-31-325. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Related other aircraft modifications STCs
Installation of a Collective Friction Lock.
FAA holder: Cougar Helicopters Inc.
Installation of a Raytheon AN/APX-119 IFF / Mode S System with Enhanced Surveillance (EHS) capability.
FAA holder: Gulfstream Aerospace Corporation
FAA record reference
- STC number
- SA5921NM
- Product
- Aircraft · Small Multi-Engine
- Country
- United States
- Application date
- December 3, 1992
- Revision date
- August 23, 2018
- CFR references
- Part 3, Part 21