# STC SA3299SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Mitchell automatic flight system AK772, consisting of Century III autopilot with optional radio and glide slope couplers.
- Status date: March 29, 1984
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A4](https://openairdocs.org/tcds/2A4)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8B5228371122B5E185256CC2000A9689.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3299SW-D

## ADs that name it (0)

None.

## Approved models (2)

- Twin Commander Aircraft Corporation 560F ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft Corporation 680-F ([TCDS 2A4](https://openairdocs.org/tcds/2A4))

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.