# STC SA385AL

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: M R Borer Aircraft Svc, United States
- Description: Installation of rudder centering device in lieu of ventral fin. *This approval includes PA20S models with Lycoming O-320, 150 hp engine installed per an appropriate STC.
- Status date: July 21, 1970
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A4](https://openairdocs.org/tcds/1A4)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8DA16563C73DBA4985256CC2000C5B10.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA385AL

## ADs that name it (0)

None.

## Approved models (3)

- The New Piper Aircraft Inc. PA-20S ([TCDS 1A4](https://openairdocs.org/tcds/1A4))
- The New Piper Aircraft Inc. PA-20S-"115" ([TCDS 1A4](https://openairdocs.org/tcds/1A4))
- The New Piper Aircraft Inc. PA-20S-"135" ([TCDS 1A4](https://openairdocs.org/tcds/1A4))

---
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.