# STC SA3494SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Century Flight Systems Inc, United States
- Description: Installation of a century automatic flight system.
- Status date: March 9, 1998
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A24](https://openairdocs.org/tcds/4A24)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EEA0F6CD7C0920C285256CC2000A98A1.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3494SW-D

## ADs that name it (0)

None.

## Approved models (3)

- McKinnon A. G. G-21C ([TCDS 4A24](https://openairdocs.org/tcds/4A24))
- McKinnon A. G. G-21E ([TCDS 4A24](https://openairdocs.org/tcds/4A24))
- McKinnon A. G. G-21G ([TCDS 4A24](https://openairdocs.org/tcds/4A24))

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