# STC SA2174SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Appalachian Accessories, United States
- Description: Replacement of Cleveland brake discs, P/N 164-15A or 164-115A with Appalachian stainless steel brake discs, P/N 75-15A.
- Status date: September 25, 1987
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 5A5](https://openairdocs.org/tcds/5A5)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/626B31C0A4F2E68585256CC200015A9E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2174SO

## ADs that name it (0)

None.

## Approved models (4)

- The Cessna Aircraft Company 305A (USAF 0-1A) ([TCDS 5A5](https://openairdocs.org/tcds/5A5))
- The Cessna Aircraft Company 305C (USAF 0-1E) ([TCDS 5A5](https://openairdocs.org/tcds/5A5))
- The Cessna Aircraft Company 305D (USAF 0-1G) ([TCDS 5A5](https://openairdocs.org/tcds/5A5))
- The Cessna Aircraft Company 305F ([TCDS 5A5](https://openairdocs.org/tcds/5A5))

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