# STC SA3153SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model AK632 consisting of a Century II B
Autopilot with Optional Radio Coupler
- Applied: August 17, 1976
- Status date: June 6, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A1CE](https://openairdocs.org/tcds/A1CE)
- Certificate PDF: https://openairdocs.org/files/sha256/e2/d3/e2d309368852d5c4bdc32476a679b25565727b723f29a379cecf25c3e13974b5
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/152DEF71C373188285256CC2000A9489.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3153SW-D

## ADs that name it (0)

None.

## Approved models (14)

- Beechcraft Corporation 19A ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Beechcraft Corporation 23 ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Beechcraft Corporation A23 ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Beechcraft Corporation A23-19 ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Beechcraft Corporation A23-24 ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Beechcraft Corporation A23A ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Beechcraft Corporation A24 ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Beechcraft Corporation A24R ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Beechcraft Corporation B19 ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Beechcraft Corporation B23 ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Beechcraft Corporation B24R ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Beechcraft Corporation C23 ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Beechcraft Corporation C24R ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))
- Beechcraft Corporation M19A ([TCDS A1CE](https://openairdocs.org/tcds/A1CE))

## 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 transportation —federal 2ttrtation administration Supplemental ICgpe Certificate SA3153SW-D Century Flight Systems, Inc.

F.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 .jA^,a4i>a>t>i& ^ fdfiJMrvaJ <Ji*xttf<ct —— <S/ A1CE Beech 19A, B19, M19A, 23, A23, A23A, B23, C23, A23-19, A23-24, A24, A24R, B24R & C24R Installation of Mitchell Automatic Flight System Model AK632 consisting of a Century II B Autopilot with Optional Radio Coupler according to Bulletin No. 759, Revision 3, dated 12-19-78 and Master Drawing List No. 87A880, Revision C, dated 12-19-78 and/or later FAA Approved revisions of the above data. (14 Volt System) See Limitations and Conditions on Continuation Sheet Page 2 a part of this STC.

8-17-76 8—23—76 -"cations "<*>»"/ 10-4-76; 1-31-79; 6-6-84, Rev. 3 -/ «6 atttrrif/tf/-' ..U'j ' C\ '' /* Don P. Watson (S>g™«»<) Manager, Aircraft Certif icatio'n Division Southwest Region

This certificate may be transferred in accordance with PAR 21.17.

FAA FotM (110-2 (10-61)

tinted £tun of anrica Bcpartmtnt of transportation— .federal atrtation administration Supplemental t^pe Certificate(Continuation &heet) SA3153SW-D, Revision 3, dated 6-6-84 Limitations and Conditions :

Beech Models 23, A23, A23A, S/N M-l thru M-962 and Beech Model A23-24, S/N MA-1 thru MA-27 must be modified in accordance with Beech Service News Letter, Volume XX, No. 11, dated November, 1967 before they are eligible for this autopilot installation.

Supplemental Flight Manual, P/N 68S405-1, dated 10-4-76 is required for Beech Models A24R and B24R.

Supplemental Flight Manual, P/N 68S406, dated 8-23-76 is required for Beech Models 19A, B19, M19A, 23, A23, B23, C23, A23-19, A23A, A23-24, and A24.

Pilot's Operating Handbook and FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S421, dated 10-4-76 is required for Beech Model C24R and/or later FAA Approved revisions of the above supplements.

FAA FORM Buo-2-i (10-69) TUs ttrtiffaU may ht trauftrred in aceordanct with FAR 21.47.

.NSTRUCTIONS: The ,™fer «dor,cmcn, be.ow «y be used to notify ,hc appropriate FAA Kc.ion., Office of i he tr»nifer of thU Supplemenul Type Certificate.

The FAA will reissue the certificate in the name of the 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) —— (City. Stttt, Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

4V .1 < r. p n ««n«-««»-<"°

## Every issue (1)

- June 6, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/e2/d3/e2d309368852d5c4bdc32476a679b25565727b723f29a379cecf25c3e13974b5)

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