SA01869CH
Installation of Wright engine model R-975-28 derated to 330 hp, Hamilton Standard propeller hub model 5406 and blade model 1C1. Limited to installationon serial number 57 ONLY. Held by Yellowstone Aviation INC.. Last revised August 27, 2003. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Buhl Aircraft Company
- Models
- CA-3E
- Type certificate
- Group 2-309
- 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.