STC SH247NW
FAA DRS lists SH247NW as Current · Reissued, held by Siam Hiller Holdings Inc, for Hiller Aviation UH-12D (Army UH-23D). Recorded change: Installation and maintenance of exhaust ejector engine oil cooler system. (UH-12D (ARMY UH-23D modified per STC SH177WE). 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
SH247NW 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: Hiller Aviation UH-12D (Army UH-23D). Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Related engine and powerplant STCs
Installation of Engine Preheat Kit, P/N TA3123-1 for 115 volt application.
FAA holder: Hartzell Propeller LLC
FAA record reference
- STC number
- SH247NW
- Product
- Aircraft · Rotorcraft
- Country
- United States
- Application date
- October 30, 1975
- Revision date
- August 19, 2005
- CFR references
- Part 21, Part 27