# STC SA3235SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK634 consisting of Century IV autopilot or AK634FD consisting of Century IV flight director autopilot with optional remote annunciator.
- Applied: July 13, 1977
- Status date: December 7, 1983
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A17SO](https://openairdocs.org/tcds/A17SO)
- Certificate PDF: https://openairdocs.org/files/sha256/e7/71/e771b11cb4389ec0eee0f27c22ba2214d0b95d87fd17eb0f494ace4461f903e6
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FE4CE2C07E1C787085256CC2000A95A9.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3235SW-D

## ADs that name it (0)

None.

## Approved models (1)

- SOCATA - Groupe Aerospatiale GA-7 ([TCDS A17SO](https://openairdocs.org/tcds/A17SO))

## What the certificate says

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

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA323554-D This certificate issued to: Century Flight Systems, Inc.

F.M. 1195 P. O. Box 610 Mineral Wells, TX 76067 Purt 23 of thedera 1 AVIAt 10n Regulations.

Original Product -Type Certificate Number: A1750 Make: Grumman American Model: GA-7 Description of Type Design Change:

Installation of Mitchell Automatic Flight System Model AK634 consisting of a Century IV Autopilot or Model AK634FD cons1sting of a Century IV Flight Director Autopilot with Optional Remote Annunciator according to Bulletin No.

761, Revision 4, dated 3/6/79 and Master Drawing List No. 87A909, Revision D, dated 3/6/79 (14 Volt System) and/or later FAA approved revision.

Limitations and Conditions: 1. P1lot's Operating Handbook and FAA/DAS Approved Airplane Flight Manual Supplement P/N 68S409-1-9, dated 1/31/78, revised 3/14/78 18 required, or P/N 68S611-S dated 5/4/78 1s required for Model GA-7, S/N 0041 and Up as applicable, and/or later FAA approved revision.

2. Placard P/N 13A660 16 required for supplement P/N 68S409-1-S.

3. Placard P/N 13A660-1 1s required for supplement P/N 68S611-S.

4. Compatibility of this modification with other previoualy approved modifications

vendered, suspended, vevoked, or a termination date is otherwise established by the Administrate n of the Federal Aviation Administration .

Date of Application: 7/13/77 Jule missued: 11/14/77; 1/31/78; 5/4/78;

3/27/78; 12/7/83 Revision 5 Date of Issuance: 1/24/77 Sale unended:

EDERAL AVIATION Don P. Watson (Signalure ) TOMINISTRA Manager, Aircraft Certification Division Southwest Region (Title) 47 FAA FORM 8110-2 (10-68)

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) (Number and sireel ;

(City, Stake, and ZIP code) Extent of Authority (if licensing agreement):

Date of Transfer: - Signature of grantor (In ink): - + 11=r. 0n. 1080-282-180

## Every issue (1)

- December 7, 1983: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/e7/71/e771b11cb4389ec0eee0f27c22ba2214d0b95d87fd17eb0f494ace4461f903e6)

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