# STC SA1-519

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Herbert Baer, United States
- Description: Griswold lateralizer and heading lock.
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A13](https://openairdocs.org/tcds/3A13), [TCDS 3A24](https://openairdocs.org/tcds/3A24), [TCDS 5A6](https://openairdocs.org/tcds/5A6)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AF9A9CB8D5ADB7C785256CCB00601824.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1-519

## ADs that name it (0)

None.

## Approved models (3)

- The Cessna Aircraft Company 180 Series ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 182 Series ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- The Cessna Aircraft Company 185 Series ([TCDS 3A24](https://openairdocs.org/tcds/3A24))

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