# STC SA2177SO

- 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 Accessories' stainless steel brake discs, P/N 75-15A.
- Status date: September 25, 1987
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A8](https://openairdocs.org/tcds/1A8)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A5E644A57C5BB2E385256CC200015AA5.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2177SO

## ADs that name it (0)

None.

## Approved models (3)

- Alliance Aircraft Group LLC H-295 (USAF U-10D) ([TCDS 1A8](https://openairdocs.org/tcds/1A8))
- Alliance Aircraft Group LLC H-391 (USAF YL-24) ([TCDS 1A8](https://openairdocs.org/tcds/1A8))
- Alliance Aircraft Group LLC H-395 (USAF L-28A or U-10B) ([TCDS 1A8](https://openairdocs.org/tcds/1A8))

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