# STC SA3381SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system Model AK883 consisting of a Century 21 autopilot.
- Applied: January 7, 1981
- Status date: August 15, 1983
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A24](https://openairdocs.org/tcds/3A24)
- Certificate PDF: https://openairdocs.org/files/sha256/1b/7e/1b7e2178c9b2505617f52bbaf8ffce4a7c204065658cc439925fceb2ce46bd89
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/21E20704FB36AAAB85256CC2000A977C.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3381SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company A185F ([TCDS 3A24](https://openairdocs.org/tcds/3A24))

## What the certificate says

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

Timitro States of Almerica Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA338154-D This certificate issued to: Century Flight Systems, Inc.

F.M. 1195 P. O. Box 610 Mineral Wells, IX 76067 Certifies that the change in the type design for the following product with the limitations and conditions therefor as specified hereon meets the airvorthiness reguirements of Part 3 of the CIV11 Air Regulations.

Original Product - Type bertificate Number: 2A24 Make: Cessna Model: A1855 Description of Type Design Change:

Installation of Mitchell Automatic Flight System Model AKS83 consisting of a Century 21 Autopilot eccording to Bulletin No. 1015 dated 11-14-80 and Master Drawing List No. 87A1090 dated 11-14-80 (28 Volt System) and/or later FAA Limitations and Conditions: S/N 18502300, 18503459 and UP Pilot's Operating Handbook and FAA/DAS Approved Airplane Flight Manual Supplement P/N 68S917 dated 11-20-80 and/or later FAA approved ruvision.

Compatibility of this modification with other previously approved modifications must be determined by the installer.

Date of Application: 1-7-81 Jute missued: 8-15-83 Revision 1 Date of Issuance: 1-7-81 Date 11 ended:

FEDERAL AVIATION uncere Don P. Watson (Signature ) SHINIS TRATO Manager, Aircraft Certification Division Southwest Region (Title)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) - (Address of transferee) (20175 pro sequen) from (Name of grantor) (Print or type) (Address of grantor) ( Number and sireel;

(po did pace as i Extent of Authority (if licensing agreement):

Signature of grantor (In ink): - +.1 = r. n. 1000-462-180

## Every issue (1)

- August 15, 1983: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/1b/7e/1b7e2178c9b2505617f52bbaf8ffce4a7c204065658cc439925fceb2ce46bd89)

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