# STC SA3077SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Mitchell automatic flight system AK553 consisting of Century I autopilot with optional omni tracker.
- Status date: June 21, 1984
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-782](https://openairdocs.org/tcds/A-782)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9A0FD03AF5099C9485256CC2000A937F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3077SW-D

## ADs that name it (0)

None.

## Approved models (3)

- Navion Aircraft Company Ltd. Navion (L-17A) ([TCDS A-782](https://openairdocs.org/tcds/A-782))
- Navion Aircraft Company Ltd. Navion A (L-17B) ([TCDS A-782](https://openairdocs.org/tcds/A-782))
- Navion Aircraft Company Ltd. Navion A (L-17C) ([TCDS A-782](https://openairdocs.org/tcds/A-782))

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