# STC SA3-503

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Bendix Corp, United States
- Description: L-2B autopilot with or without altitude controller and/or approach coupler.
- Status date: January 1, 1960
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A21](https://openairdocs.org/tcds/3A21)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9F31D09C97248DC8862570CA00799E5E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3-503

## ADs that name it (0)

None.

## Approved models (1)

- The Cessna Aircraft Company 210 Series ([TCDS 3A21](https://openairdocs.org/tcds/3A21))

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