# STC SA3089SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model AK561 consisting of a Century III Autopilot.
- Applied: November 17, 1975
- Status date: June 20, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A7SO](https://openairdocs.org/tcds/A7SO)
- Certificate PDF: https://openairdocs.org/files/sha256/8f/60/8f60c21eab1bcb96424abba7e1cbba5b59e6a9be240d905823e0aac64fb40ef7
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4712DCF46629887F85256CC2000A93AA.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3089SW-D

## ADs that name it (0)

None.

## Approved models (2)

- Piper Aircraft Inc. PA-34-200T ([TCDS A7SO](https://openairdocs.org/tcds/A7SO))
- Piper Aircraft Inc. PA-34-220T ([TCDS A7SO](https://openairdocs.org/tcds/A7SO))

## 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.

Bepartmcnt of transportation federal atriation administration Supplemental 'Cgpe Certificate SA3089SW-D Century Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 f^^M&fc'tteiwn .JA&M4/i**^^ 23 Federal Aviation

•Jl£*&u/a&4>nA A7SO Piper PA-34-200T, PA-34-220T Installation of Mitchell Automatic Flight System Model AK561 consisting of a Century III Autopilot per Bulletin No. 684, Revision 7, dated 2-3-81 and Master Drawing List No. 87A814, Revision G, dated 2-3-81 (14 Volt System) and/or later FAA Approved revisions of the above data.

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S291, dated 12-24-75 is required for Piper Model PA-34-200T.

Placard. 13A6 60 stating "Conduct trim check prior to flight (See AFM) is required for Piper Model PA-34-200T.

See Continuation Sheet, Pa*ge 2, a part of this STC °ther Previously approved modifications f'n' vn/^Xef / Mm/it' A*vreSh4? th 11-17-75 -u^ ~^ — '.- 6-15-81; 6-20-84, Revision 2 Don P. Watson (Signal*,,) Manager, Aircraft Certification Division Southwest Region (Title)

This certificate may be transferred in accordance with FAR 21 .17.

FAAFcwM 81 10-2 (10-68)

gtato of antrica Bcpartment of transportation—Jpcfleral ablation administration Supplemental ¥gpe Certificate(Continuation &heet) tS\M/WWe& SA3089SW-D, Rev. 2, dated 6-20-84 Limitations and Conditions (continued):

Pilot's Operating Handbook and FAA Approved Airplane Flight Manual Supplement P/N 68S927, dated 6-5-81 for Piper Model PA-34-220T and/or later FAA Approved revisions of the above supplements are required.

Placard 13A660-1 stating "Conduct Trim Check Prior to Flight"(See POH) is required for Piper Model PA-34-220T.

FAA FORM 811O-2-1 (I04B) TUt ttrtifcat* may bi traiujmtd in accordant with FAR 21.47.

.NSTRUCTIONS: The .ranfer en<tor,emen, be.ow may be used to n<xify .he approve FAA Kepona. Office of the transfer of thtt Supplemenul Type Certificate.

The FAA will remue the certificate in the name of the traniferee and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Kerne of transferee).

(Address of transferee) _ from (Name of grantor) (Print or type).

(Address of grantor) (Xumktr tnd Urtitj Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- June 20, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/8f/60/8f60c21eab1bcb96424abba7e1cbba5b59e6a9be240d905823e0aac64fb40ef7)

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