# STC SA3257SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK693 consisting of Century III autopilot with optioanl radio coupler and glide slope coupler
- Applied: January 3, 1978
- Status date: March 28, 1984
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A29CE](https://openairdocs.org/tcds/A29CE)
- Certificate PDF: https://openairdocs.org/files/sha256/4a/80/4a80008e912670db5f655d00bc1e414216faa7488a33a92b7f86a499ce58c452
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1764DEA6797748A686257DA8006867DD.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3257SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Beechcraft Corporation 76 ([TCDS A29CE](https://openairdocs.org/tcds/A29CE))

## 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: SA325754-D This certificate issued to: Century Flight Systems, Inc.

F.M. 1195

• 0. Box 610 Mineral Wells, IX 76067 Part 23 of the odoral AvIation Regulations.

Original Product - Type Bertificate Number: A29CE Make: Beech Model: 76 Description of Type Design Change:

Installation of Mitchell Automatic Flight System Model AK693 consisting of a Century III Autopilot with Optional Radio Coupler and Glide Slope Coupler according to Bulltin No. 822 dated 1-3-78 and Master Drawing List No. 87A975 dated 1-3-78 (14 Volt System), or later FAA approved revision.

finitaling perdbung lindbook and PAA/DAS Approved Airplane P11ght Manual Supplement P/N 68S625-S dated 1-25-78 1s required.

Placard P/N 13A660-1 1s required.

Thist blede and the suppe ring date which is the basis fir appr val shall remain in effect until sur Compatibility of this modification with other previously approved modifications vendered, suspended, veroked, or a termination date is otherwise es tabdished by the Adminis traler f the Federal Aviation Administration .

Date of Application: 1-3-78 Nute missued: 3-28-84 Rev181on 1 Date of Issuance: . 1-25-78 Date Amended:

FEDERAL AVIATION By Direction of the Administrator Don P. Watson (Signature ) PHINISTRATO Manager, Aircraft Certification Division Southwest Region (Tille) 47 FAA FORM 8110-2 (10-68)

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

(Address of transferee) (Yumber and street) (City, Stake, and <IP code) from (Name of grantor) (Print or sype) (Address of grantor) (Number and sireel ;

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

Signature of grantor (In ink):

+11 = r. 0 1. 1098-882-190

## Every issue (1)

- March 28, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/4a/80/4a80008e912670db5f655d00bc1e414216faa7488a33a92b7f86a499ce58c452)

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