SA632NW
Installation of a Continental GO-300-E engine, McCauley 2A31C21/84S-0 propeller, Cessna 175C engine nacelle, engine mount, cowl flaps, and associated systems. Held by Seaplane Flying INC, which holds 18 approved modifications in all. Last revised July 30, 1979. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company
- Models
- 175
- Type certificate
- 3A17
- On this site
- Cessna 175 Skylark 925 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 22, 2026.