# STC SA8903SW-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-572 with optional autotrim system.
- Status date: August 21, 2002
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A17EU](https://openairdocs.org/tcds/A17EU)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/56D430CA457BBE1C85256CC20058E96D.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA8903SW-D

## ADs that name it (0)

None.

## Approved models (8)

- Pilatus Britten-Norman Limited BN-2A-2 ([TCDS A17EU](https://openairdocs.org/tcds/A17EU))
- Pilatus Britten-Norman Limited BN-2A-20 ([TCDS A17EU](https://openairdocs.org/tcds/A17EU))
- Pilatus Britten-Norman Limited BN-2A-26 ([TCDS A17EU](https://openairdocs.org/tcds/A17EU))
- Pilatus Britten-Norman Limited BN-2A-6 ([TCDS A17EU](https://openairdocs.org/tcds/A17EU))
- Pilatus Britten-Norman Limited BN-2A-8 ([TCDS A17EU](https://openairdocs.org/tcds/A17EU))
- Pilatus Britten-Norman Limited BN-2B-20 ([TCDS A17EU](https://openairdocs.org/tcds/A17EU))
- Pilatus Britten-Norman Limited BN-2B-26 ([TCDS A17EU](https://openairdocs.org/tcds/A17EU))
- Pilatus Britten-Norman Limited BN-2T ([TCDS A17EU](https://openairdocs.org/tcds/A17EU))

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