# STC SA3376SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Mitchell automatic flight system AK874 consisting of Century 21 autopilot.
- Status date: August 24, 1983
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A19SO](https://openairdocs.org/tcds/A19SO)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A9F51CF303D461A485256CC2000A976F.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3376SW-D

## ADs that name it (0)

None.

## Approved models (2)

- The New Piper Aircraft Inc. PA-44-180 ([TCDS A19SO](https://openairdocs.org/tcds/A19SO))
- The New Piper Aircraft Inc. PA-44-180T ([TCDS A19SO](https://openairdocs.org/tcds/A19SO))

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