# STC SA3159SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model AK409 consisting of Century I Autopilot with Optional Omni Tracker
- Applied: September 29, 1976
- Status date: June 6, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/c5/33/c5337e74aa0aaf3cde9451f00e85e08a348366267223b4686ba51f5c0f8fe09b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CBC07B5ACCBE2CF785256CC2000A949C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3159SW-D

## ADs that name it (0)

None.

## Approved models (4)

- Beechcraft Corporation S35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation V35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation V35A ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation V35B ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Bepartment of transportation —federal 2toiation administration Supplemental 'Cuje Certificate iSKwmvev' SA3159SW-D , Century Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 4^ j*t^rt£^ ^n 4ri*sJyjfa ded^n f^^n^^e&*w j^^ 3 4^j&f Civil Air <gm/a/**>nA.

3A15 Beech S35, V35, V35A, V35B Installation of Mitchell Automatic Flight System Model AK409 consisting of Century I Autopilot with Optional Omni Tracker according to Bulletin No.

532, Revision 2, dated 9-27-76 and Master Drawing List No. 87A644, Revision B, dated 9-27-76 FAA/DAS Approved Limitations Placards are required:

P/N 13A681-409-1, dated 2-27-76 for Beech Model S35 P/N 13A681-409-2, dated 10-7-74 for Beech Model V35 P/N 13A681-409-3, dated 10-7-74 for Beech Model V35A, V35B J^ab£ii£S^eJh4? ?ne^s1ai?.Vfth °ther Previously *PP-ved modifications ^si^Jcev^fic&&^n&^rifAijJ^is^vriyj^/MM'/u4w^£n^ u 9-29-76 ^/««^ «-<jj««/. 6-6-84, Revision 1 10-20-76 Z/'a& atlt Don P. Watson Manager, Aircraft Certification Division Southwest Region (Title)

This certificate may be transferred in accordance with FAR 21.17.

FAA FotM SII0- 2 (10-««)

,NSTRUCTIONS: The transfer eadornment below may be used to notify the appropriate FAA Regional Office of the transfer of thit Supplemental Type Certificate.

The FAA will reissue the certificate in the name of the transferee and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) _ (Address of transferee).

from (Name of grantor) (Print or type).

(Address of grantor) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- June 6, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/c5/33/c5337e74aa0aaf3cde9451f00e85e08a348366267223b4686ba51f5c0f8fe09b)

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