SA3386WE
Installation of Lycoming IO- .54O-D4A.5 engine , Hartzell HC-C2YK-1J3F/F8467- 7R constant\nspeed propeller. Held by Francis e. Holsclaw. Last revised April 14, 1977. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Aermacchi S.p.A.
- Models
- S.205 - 22/R
- Type certificate
- A9EU
- On this site
- Siai-Marchetti S.205/22R 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.