# STC SA4226WE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Kettler Douglas L, United States
- Description: Installation of DTL-1000, -1001 and/or -1002/3 autopilot adapters for the Edo-Aire Mitchell Century III autopilot.
- Status date: September 15, 1980
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A20SO](https://openairdocs.org/tcds/A20SO)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/14C1D153098722AE85256CC2000E3AA5.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4226WE

## ADs that name it (0)

None.

## Approved models (3)

- The New Piper Aircraft Inc. PA-31 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))
- The New Piper Aircraft Inc. PA-31-325 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))
- The New Piper Aircraft Inc. PA-31-350 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))

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