# STC SA3155SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model AK626 consisting of Century
III Autopilot with Optional Radio Coupler and Glide Slope Coupler
- Applied: August 30, 1976
- Status date: June 6, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- Certificate PDF: https://openairdocs.org/files/sha256/20/44/2044384ea6ea44c0f646936364ce2b90dd1c8fc24fc122d8efa3c23f14bf894a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FA017F4B0C55689B85256CC2000A9490.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3155SW-D

## ADs that name it (0)

None.

## Approved models (2)

- Piper Aircraft Inc. PA-23-250 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- Piper Aircraft Inc. PA-E23-250 ([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.

•Department of 'Cranfiportatiori —federal atriation administration Supplemental t^uje Certificate iSfovmvev' SA3155SW-D Century Flight Systems, Inc.

F.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 £Jp4*aA*ia* iJfwe&a*/ —— • 3 1A10 Piper PA-23-250, PA-E23-250 Installation of Mitchell Automatic Flight System Model AK626 consisting of Century III Autopilot with Optional Radio Coupler and Glide Slope Coupler according to Bulletin No. 753, Revision 1, dated 4-20-79 and Master Drawing List No. 87A882, Revision A, dated 4-20-79 (28 Volt System) and/or later FAA approved revisions of the above data.

Eligible on Piper Models PA-23-250, S/N 27-3944 and Up and PA-E23-250, S/N 27-3944 thru 27-7554181 and PA-23-250, S/N 27-3944 and Up and PA-E23-250, S/N 27-3944 thru 27-7554181 when modified in accordance with STC SA909WE. (28 Volt System Only) See Continuation Sheet, Page 2, a part of this STC« °ther Previously ^Proved modifications /n,at4^^ »«»*»«/.• 4-25-79, Rev.l; 6-6-84, Rev. 2

•s/.u- dt'tw/ti-rt *>/ w* £'X Don P. Watson <Sig*atwt) Manager, Aircraft Certification Division Southwest Region (Title)

This certificate may be transferred in accordance with hAR 21.17.

**FAA FCMM 8II0-2 (10-68)**

ttntttfl&attsofaiKta Btpartmtnt of ICransportation— jptieral atnation administration topplemental ICjp Certificate(Continuation $heet) SA3155SW-D, Rev. 1, 4-25-79;

Rev. 2, 6-6-84 LIMITATIONS AND CONDITIONS:

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S402, dated 9-9-76 is required for Piper PA-23-250, S/N 27-3944 thru 27-7554181 and PA-E23-250, S/N 27-3944 thru 27-7554181 and the above models modified in accordance with STC SA909WE.

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S413, dated 9-9-76 is required for PA-23-250, S/N 27-7654001 and Up and when modified in accordance with STC SA909WE and/or later FAA approved revisions of the above Supplements.

Placard P/N 13A660 is required.

FAA FORM 8110-2-1 (10-W) This urtificatt may bi transftrrtd in accordant! with FAR 21.47.

.NSTRUCTIONS: The transfer endorsement be.ow may be u~d to notify the appropriate FAA Kepona. Office of i he tranifer of thi* Supplemenul Type Cenificate.

The FAA will reitsue the certificate in the name of «he 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) ( Sumbf *iut Untt i Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

4V it « r. o <i i«n«-««»-«V>

## Every issue (1)

- June 6, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/20/44/2044384ea6ea44c0f646936364ce2b90dd1c8fc24fc122d8efa3c23f14bf894a)

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