# STC SA8891SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Install S-TEC System 55, 2 axis automatic flight guidance system, Model ST-562, with optional autotrim system.
- Status date: April 18, 2001
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A1EA](https://openairdocs.org/tcds/A1EA)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/17C0E11144E35E5185256CC20058E959.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA8891SW-D

## ADs that name it (0)

None.

## Approved models (2)

- The New Piper Aircraft Inc. PA-30 ([TCDS A1EA](https://openairdocs.org/tcds/A1EA))
- The New Piper Aircraft Inc. PA-39 ([TCDS A1EA](https://openairdocs.org/tcds/A1EA))

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