# STC SA3101SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model AK586 consisting of Century
IIB Autopilot with Optional Radio Coupler
- Applied: January 6, 1976
- Status date: May 24, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- Certificate PDF: https://openairdocs.org/files/sha256/f5/94/f59494d92163dfbb2449d150823f63a6ca832d72e4f1aa6ac2dd3b04410707f3
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/84D105B76D658C1285256CC2000A93DB.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3101SW-D

## ADs that name it (0)

None.

## Approved models (2)

- Piper Aircraft Inc. PA-23 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- Piper Aircraft Inc. PA-23-160 ([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.

Bcpartment of Importation—federal 2toiation administration Supplemental ¥gpe Certificate tSfovrrwev' SA3101SW-D Century Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 /'£w^tfwde&<>grt'4^J!^jCc>6^ 3 Civil Air 1A10 Piper PA-23, PA-23-160 Installation of Mitchell Automatic Flight System Model AK586 consisting of Century IIB Autopilot with Optional Radio Coupler according to Bulletin No. 710, Revision 3, dated 5-23-77 and Master Drawing List No. 87A832, Revision C, dated 5-23-77.

Also eligible on Piper Models PA-23 and PA-23-160 when modified in accordance with STC's SA499SW and **SA636SW and the same models if modified by any of the following STC's installed in any combination: SA362SW, SA497SW, SA671SW, SA899SW and SA1294SW.

**STC's SA371SW and SA463SW are included in STC SA636SW See Continuation Sheet, Page 2, a part of this STC.

°ther Previously approved modifications

• 6-9-775-24-84, Revision 2 4*/ &ie .^f4 Don P. WatSOn (Signature) Manager, Aircraft Certification Division Southwest Region (Title)

This certificate may be transferred in accordance with FAR 21.17.

FAAFo«M 8110-2 (10-68)

lilted gtatu of awrfca Bcpartmcnt of transportation—federal atnarion administration Supplemental t^pe Certificate(Continuation $heet) SA3101SW-D Limitations and Conditions:

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S329-1, dated 6-9-77 is required for Piper Models PA-23 and PA-23-160 when modified in accordance with STC SA499SW and STC *SA636SW and the same models if modified by any of the following" STC's in any combination: STC's SA362SW, SA497SW, SA671SW, SA899SW and SA1294SW *STC's SA371SW and SA463SW are included in STC SA636SW.

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S560, dated 6-9-77 is required for Piper Models PA-23 and PA-23-160.

FAA FORM 8)10-2-1 (to-w) Tku ctrtificatt my tt trmuftntd in accordant! with FAR 21.47, PAGE 2 OF 2 PAGES

.NSTRUCTIONS: The transfer endorsement be.ow may be used to notify the appropriate FAA Kc.ion., Office of the tranifer of thu Supplement*! Type Certificate.

The FAA will reissue the certificate in the name of .he transferee and forward i, 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)

- May 24, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f5/94/f59494d92163dfbb2449d150823f63a6ca832d72e4f1aa6ac2dd3b04410707f3)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.