# STC SA8908SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 55 Two Axis automatic flight guidance system, Model ST-575, with optional autotrim system.
- Status date: May 24, 2001
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A25](https://openairdocs.org/tcds/3A25)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1E8E94898FEDC0F985256CC20058E972.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA8908SW-D

## ADs that name it (0)

None.

## Approved models (3)

- The Cessna Aircraft Company 335 ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- The Cessna Aircraft Company 340 ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- The Cessna Aircraft Company 340A ([TCDS 3A25](https://openairdocs.org/tcds/3A25))

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