# STC SA3-489

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Bendix Corp, United States
- Description: L2C autopilot with altitude control and approach coupler.
- Status date: April 26, 1966
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-813](https://openairdocs.org/tcds/A-813)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/700E5FFCB56A0D0685256CC20008CC9B.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3-489

## ADs that name it (0)

None.

## Approved models (3)

- Piaggio & C. P.136-L ([TCDS A-813](https://openairdocs.org/tcds/A-813))
- Piaggio & C. P.136-L1 ([TCDS A-813](https://openairdocs.org/tcds/A-813))
- Piaggio & C. P.136-L2 ([TCDS A-813](https://openairdocs.org/tcds/A-813))

---
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.