SA939NW
Installation of Hartzell HC-C2YK-4AF/FC7666A-40 propeller, fiberglass engine cowl, crossover exhaust system, and upper wing cabane fairing. Held by Steven e Soper. Last revised May 12, 1980. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Aviat Aircraft Inc
- Models
- S-2A
- Type certificate
- A8SO
- On this site
- Aviat Aircraft Inc S-2 57 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 21, 2026.