# STC SA1-555

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Dynavia Corporation, United States
- Description: ANC-3A computer and ANC-C2 or ANC-D2 controller.
- Status date: January 1, 1960
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 6A1](https://openairdocs.org/tcds/6A1)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B46A3A3441A4BBB6862570BD0056F940.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1-555

## ADs that name it (0)

None.

## Approved models (1)

- Twin Commander Aircraft Corporation 500 Series ([TCDS 6A1](https://openairdocs.org/tcds/6A1))

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