SR01547SE
Fabrication of Part Number PH774664-113 "Transmission Input shaft Spacer" and PH774682-11 "Flange coupling Transmission Adapter"; Installation of the KAflex Driveshaft System. Held by Horizon Helicopters INC.. Last revised July 3, 2007. System: rotorcraft systems.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Timber Choppers; Timber Choppers
- Models
- HH-43B/F, HH-43F
- Type certificates
- H1NW, H1NW
- The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 22, 2026.