STC SH339NW
FAA DRS lists SH339NW as Current · Reissued, held by Siam Hiller Holdings Inc, for Rogerson Hiller UH-12E. Recorded change: Installation of transmission oil cooling system on the Allison250-C20 turbine powered Hiller UH-12E rotorcraft. (UH-12E modified per STC SH178WE). 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
SH339NW 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: Rogerson Hiller UH-12E. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Related engine and powerplant STCs
Installation of Teledyne Continental Motors IO-550-B engine, cooling baffles, and propeller.
FAA holder: Hammock Aviation Services, Inc.
Installation of engine fuel purge systems.
FAA holder: Aeronautical Accessories
FAA record reference
- STC number
- SH339NW
- Product
- Aircraft · Rotorcraft
- Country
- United States
- Application date
- July 22, 1976
- Revision date
- August 19, 2005
- CFR references
- Part 21, Part 27