STC SH593EA
FAA DRS lists SH593EA as Current · Surrendered, held by Garrett Aviation Services, for Sikorsky Aircraft S-61N. Recorded change: Installation of Sperry C14A gyrosyn compass system.Descriptive data pertaining to this design change are considered inadequate for duplication in other products. This approval is limited to only the installation made in Sikorsky, S61N, Serial No 61424. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
SH593EA 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: Sikorsky Aircraft S-61N. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Related other aircraft modifications STCs
Installation of a Ballistic Protection System (BPS).
FAA holder: Erickson Incorporated
Installation of a Ballistic Protection System (BPS).
FAA holder: Erickson Incorporated
Installation of auxiliary vertical seaplane fins.
FAA holder: Kenmore Air Harbor LLC
Installation of Heli-Preheat System, P/N 2862-1 for 115 volt application.
FAA holder: Hartzell Propeller LLC
FAA record reference
- STC number
- SH593EA
- Product
- Aircraft · Rotorcraft
- Country
- United States
- Application date
- January 11, 1968
- Revision date
- December 14, 2005
- CFR references
- Part 21