SA09879AC
Installation of the Continental Motors IO-520-D engine and a Hartzell PHC-J3YF-1RF/F8468A-6R propeller. Held by James A. Ridpath, JR.. Last revised July 26, 2017. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Sierra Hotel Aero Inc.
- Models
- Navion A (Army L-17B and L-17C)
- Type certificate
- A-782
- 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.