SA13NW
Installation of a Menasco D-4 engine and Fahlin D-732 propeller. Held by Smith, Harold e.. Last revised September 29, 1972. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Fairchild Industries Inc.
- Models
- 22 C7D
- Type certificate
- ATC 503
- On this site
- Fairchild 22 21 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 7, 2026.