# STC SA3154SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model AK633 consisting of a Century I
Autopilot with Optional Omni Tracker
- 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/sha256/15/56/1556caf9dd902a07a2811f1f06f2a5c18070c572efc35fa7d15069bbe71de67f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7AB4779495D18C0185256CC2000A948C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3154SW-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

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SA3154SW-D This certificate issued to: Century Flight Systems, Inc.

F.M. 1195 P. O. Box 610 Mineral Wells, IX 76067 Purt 3 of the CIV11 Air Regulations.

Original Product - Type Certificate Nurnben: AICE Beech Model: 19A, B19, M19A, 23, A23, A23A, B23, C23, A23-19, A23-24, A24, A24R, B24R, & C24R Description of Type Design Change:

Installation of Mitchell Automatic Flight System Model AK633 consisting of a Century I Autopilot with Optional Omni Tracker according to Bulletin No. 760, Revision 3, dated 12-19-78 and Master Drawing List No. 87A881, Revision C, dated 12-19-78 and/or later FAA Approved revisions of the above data. (14 Volt System) Limitations and Conditions:

See Continuation Sheet, Page 2, a part of this SIC, for Limitations and Conditions.

of the Federal Aviation Administration .

Date of Application: 8-17-76 Jule missed: 10-4-76; 1-31-79; 6-6-84, Rev. 3 Date of Issuance: . 8-23-76 Sale unended:

FEDERA AVIAT By Direction of the Administrator Don P. Watson (Signature ) TOMINISTRA Manager, Aircraft Certification Division Southwest Region (Title)

47.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA31545W-D, Revision 3, dated 6-6-84 Limitations and Conditions:

Beech Models 23, A23, A23A, S/N M-1 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 685407-1, dated 10-4-76 is required for Beech Models A24R and B24R.

Supplemental Flight Manual, P/N 68S408, dated 8-23-76 is required for Beech Models 19A, B19, M19A, 23, A23, A23A, B23, C23, A23-19, A23-24, and A24.

Pilot's Operating Handbook and FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S420, dated 10-4-76 is required for Beech Model C24R and/or later FAA Approved revisions of the above supplements.

47.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) _ (Address of transferee) from (Name of grantor) (Print or sype) (Address of grantor) ( Number and streel ;

(spor 812 pace pans s) Extent of Authority (if licensing agreement): - Date of Transfer:

Signature of grantor (In ink):

+11 = r. 0~. 1000-662-100

## Every issue (1)

- June 6, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/15/56/1556caf9dd902a07a2811f1f06f2a5c18070c572efc35fa7d15069bbe71de67f)

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