# STC SA8902SW-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-571, with optional autotrim system. Eligibility limited to PA-28RT-201, serial number 28R-7918070 and up, and Model PA-28RT-201T, serial number 28R-7931100 and up.
- Status date: April 18, 2001
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A13](https://openairdocs.org/tcds/2A13)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2FFFBE441E04C34785256CC20058E96C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA8902SW-D

## ADs that name it (0)

None.

## Approved models (2)

- The New Piper Aircraft Inc. PA-28RT-201 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- The New Piper Aircraft Inc. PA-28RT-201T ([TCDS 2A13](https://openairdocs.org/tcds/2A13))

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.