# STC SA3209SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK684 Piper altimatic X autopilot or AK684FD Piper altimatic X flight director autopilot with optional remote annunciator.
- Applied: April 27, 1977
- Status date: December 7, 1983
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- Certificate PDF: https://openairdocs.org/files/sha256/b8/cc/b8ccf6cb858c97465d751d779609596ffb3c282d0dd8468ec0c0d0beb79009e0
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CD186A2E33A6D6BB85256CC2000A9547.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3209SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Piper Aircraft Inc. PA-23-250 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))

## 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.

Uitittd States of 2ntric8 Bcparrment of transportation —federal Stoiation administration Supplemental t^pe Certificate <yu#m0€4t' SA3209SW-D Century Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 'J'n&Jyfi&Jeie&<jaAVf<^s4in&fi>t(tH4fim^ 3 d'J&f Civil Air i/l&aAt&a/tc-nA/.

Piper PA-23-250 d*-S/ySi&^f ^e&ia&i VlsuirMe> :

Installation of Mitchell Automatic Flight System Model AK684 Piper Altimatic X Autopilot or AK684FD Piper Altimatic X Flight Director Autopilot with Optional Remote Annunicator according to Bulletin No. 813, Revision 3, dated £-20-79 and Master Drawing List No. 87A923, Revision C, dated 4-20-79 (28 Volt System) and/or later FAA approved revisions of the above data.

Eligible on Piper Model PA-23-250, S/N 27-7654001 and Up only. Also eligible on the above model when modified in accordance with STC SA909WE (Turbocharged Engine) FAA/DAS Approved Pilot's Operating Handbook Supplement, P/N 68S538-1-S, dated 9-27-77 is required and/or later FAA approved revisions of the above supplements.

A Placard stating, "Conduct trim check prior to flight - (See POH)" is required.Compatibility of this modification with other previously approved modifications t be determined by the. ins-taller / .^^^njdafaMtntf/1-i -u* • Vzat/u'-n i& foa/<-r- <d tnf- ,™: 4-27-77 !/,,& „**.<„/:

' .' 5—19—77 -J atr arrtftuttt/:

Don P. Watson Manager, Aircraft Certification Division Southwest Region (Title)

FAA FotM 8110-2 (10-68)

.NSTRUCTIONS: The transfer endorsee, be.ow may be used ,o notify .he appropriate FAA Region.. Office of the transfer of thU Supplemental Type Certificate.

The FAA will reissue the certificate in the name of the transferee and forward it 10 him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee)_ (Address of transferee) — ( MumbfT tnd strttt) from (Name of grantor) (Print or type).

(Address of grantor) —— (Citr, Suit, Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- December 7, 1983: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/b8/cc/b8ccf6cb858c97465d751d779609596ffb3c282d0dd8468ec0c0d0beb79009e0)

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