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.
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.
Buyer checks
Confirm before sourcing
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