SA377CH
Installation of Hartzell propeller model HC-D4N/3P/D9511F(K)/ D-630. Held by Hartzell Propeller INC, which holds 90 approved modifications in all. Last revised August 10, 1995. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Pilatus Aircraft Limited; Pilatus Aircraft Limited; Pilatus Aircraft Limited
- Models
- PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4
- Type certificates
- 7A15, 7A15, 7A15
- On this site
- Pilatus PC-6 22 registered
- 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 20, 2026.