# STC SA3104SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model AK583, consisting of
Century IIB Autopilot with Optional Radio Coupler
- Applied: January 21, 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/sha256/31/a1/31a153d5fed71136706350b00fe784a1d3d16575fe03360b66f3a2fe8a9500ef
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3F3BFD520845FE1885256CC2000A93E3.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3104SW-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 or transportation —federal dotation administration Supplemental 'Cgpe Certificate tSiuvrvver' SA3104SW-D Century Flight Systems, Inc.

F.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 .4w,a*>i*00f&Amc^*^ 3 Civil Air Cktot/ruit \-%0tlu*>t —— 1A1U PIPER PA-23-250, PA-E23-250 Installation of Mitchell Automatic Flight System Model AK583, consisting of Century IIB Autopilot with Optional Radio Coupler according to Bulletin No. 707, dated 1-21-76 and Master Drawing List No. 87A836, dated 1-21-76.

Eligible on Piper Models PA-23-250 and PA-E23-250, S/N27-3944 and Up and PA-23-250 and PA-E23-250, S/N27-3944 and Up when modified per STC SA909WE (14V only) FAA/DAS Approved Airplane Flight Manual Supplement P/N 68S337, dated 2-10-76 is required. * . "edifications &t^rn^ri^fa*n ^ <* w* !/*,& ****•*</ :

.u-ji- 5-24-84, Revision 1 Don P. Watson Manager, Aircraft Certification Division Southwest Region (Title) ___

**FAAFCMM 8110-2(10-68)**

.NSTRUCTIONS: The transfer endorsement be.ow may be used to notify the appropriate FAA Kegiona, Office of the transfer of this Supplemental Type Certificate.

The FAA will reissue the certific.ce in che name of the transferee and forward ic ,o him.

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

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

(Address of grantor) (Xumktr tint attil) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- May 24, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/31/a1/31a153d5fed71136706350b00fe784a1d3d16575fe03360b66f3a2fe8a9500ef)

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