# STC SA3306SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Mitchell automatic flight system AK776, consisting of Century III autopilot with optional and glide slope couplers.
- Status date: September 21, 1983
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3SO](https://openairdocs.org/tcds/A3SO)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F49776F09593904E85256CC2000A96A3.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3306SW-D

## ADs that name it (0)

None.

## Approved models (3)

- The New Piper Aircraft Inc. PA-32-300 ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- The New Piper Aircraft Inc. PA-32-301 ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- The New Piper Aircraft Inc. PA-32-301T ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))

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