# STC SA01869CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Yellowstone Aviation Inc., United States
- Description: 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.
- Applied: March 6, 2003
- Status date: August 27, 2003
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS Group 2-309](https://openairdocs.org/tcds/Group%202-309)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D790EBD3EAB9A79686256DA6006C5B41.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA01869CH

## ADs that name it (0)

None.

## Approved models (1)

- Buhl Aircraft Company CA-3E ([TCDS Group 2-309](https://openairdocs.org/tcds/Group%202-309))

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