# STC SA3171SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model AK644 consisting of
Century I Autopilot with Optional Omni Tracker.
- Applied: November 5, 1976
- Status date: June 18, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A21](https://openairdocs.org/tcds/3A21)
- Certificate PDF: https://openairdocs.org/files/sha256/5b/43/5b4309c5b4751a983f678c452792cc5ea7d1535ff32603431ec3af53d92ae318
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7B2347538D48CA2185256CC2000A94C9.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3171SW-D

## ADs that name it (0)

None.

## Approved models (8)

- Textron Aviation Inc. 210G ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Textron Aviation Inc. 210H ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Textron Aviation Inc. 210J ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Textron Aviation Inc. 210K ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Textron Aviation Inc. T210G ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Textron Aviation Inc. T210H ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Textron Aviation Inc. T210J ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- Textron Aviation Inc. T210K ([TCDS 3A21](https://openairdocs.org/tcds/3A21))

## 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: SA31715W-D This certificate issued to: Century Flight Systems, Inc.

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

Original Product - Type bertificate Number: ЗА21 Cessna Model: 210G, 210H, 210J, 210K, T210G, I210H, T210J, T210K Description of Type Design Change:

Installation of Mitchell Automatic Flight System Model AK644 consisting of Century I Autopilot with Optional Omni Tracker according to Bulletin No. 771, dated 11-5-76 and Master Drawing List No. 87A888, dated 11-5-76 tirnitations and bindilions:

FAA/DAS Approved Supplemental Flight Manual, P/N 685439, dated 12-2-76 1s required for Cessna Models 210G, 210H, 210J, 210K, T210G, I210H, T210J, T210K

Date of Application: 11-5-76 Jule wissued: 6-18-84, Revision 1 Date of Issuance: . 12-2-76 Jale unvended:

FEDERAL AVIATION By Direction of the Administrator Don P. Watson (Signature ) TOMINISTA Manager, Aircraft Certificatioh Division Southwest Region (Title)

47.

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

(Address of transferee) (pees pro sequen) from (Name of grantor) (Print or type) (Address of grantor) I Number and streel ;

Signature of grantor (In ink):

+ 11= r. 0~. 1090-262-n00

## Every issue (1)

- June 18, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/5b/43/5b4309c5b4751a983f678c452792cc5ea7d1535ff32603431ec3af53d92ae318)

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