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
Installation of transmission oil cooling system on the Allison250-C20 turbine powered Hiller UH-12E rotorcraft. (UH-12E modified per STC SH178WE).
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
- 01Does it cover the exact Rogerson Hiller UH-12E model, serial range, and configuration?
- 02Which powerplant configuration, limits, instruments, and maintenance data apply?
- 03Who can legally supply the design data, kit, instructions, and ICAs?
- 04What parts, labor, conformity, and return-to-service work are excluded?
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