# STC SA3394SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system Model AK891consisting of Century 31 autopilot.
- Status date: August 24, 1983
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8750934D3751DE8885256CC2000A9799.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3394SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Raytheon Aircraft Company A36 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

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