# STC SA1977SO

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Appalachian Accessories, United States
- Description: Installation of Appalachian Accessories stainless steel brake discs P/N 73-47.
- Status date: January 14, 1987
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A13](https://openairdocs.org/tcds/1A13)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/809B48B0D1FBA65585256CC10083D39D.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1977SO

## ADs that name it (0)

None.

## Approved models (6)

- REVO Incorporated Colonial C-1 ([TCDS 1A13](https://openairdocs.org/tcds/1A13))
- REVO Incorporated Colonial C-2 ([TCDS 1A13](https://openairdocs.org/tcds/1A13))
- REVO Incorporated Lake LA-4 ([TCDS 1A13](https://openairdocs.org/tcds/1A13))
- REVO Incorporated Lake LA-4-200 ([TCDS 1A13](https://openairdocs.org/tcds/1A13))
- REVO Incorporated Lake LA-4A ([TCDS 1A13](https://openairdocs.org/tcds/1A13))
- REVO Incorporated Lake LA-4P ([TCDS 1A13](https://openairdocs.org/tcds/1A13))

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.