# STC SA3449SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Century automatic flight system, Model YK954 consisting of a Century yaw damper system.
- Applied: December 16, 1986
- Status date: December 19, 1986
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A13](https://openairdocs.org/tcds/1A13)
- Certificate PDF: https://openairdocs.org/files/sha256/9d/e8/9de87225b1400a676aaf4f93ac6904b13636f58e71b00d30d002b81daa1d25dc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4799D96885D81B6B85256CC2000A982F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3449SW-D

## ADs that name it (0)

None.

## Approved models (3)

- REVO Incorporated Lake LA-4 ([TCDS 1A13](https://openairdocs.org/tcds/1A13))
- REVO Incorporated Lake LA-4-200 ([TCDS 1A13](https://openairdocs.org/tcds/1A13))
- REVO Incorporated Lake LA-4A ([TCDS 1A13](https://openairdocs.org/tcds/1A13))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Unicri £tatii of amnua Bcpartmcnt of transportation -federal aoiarion administration Supplemental t:uje Certificate ..Slfau-ta SA3449SW-D FlightF.M. 1195 P.O. Box 610 Mineral Wells, TX76067 nae x> *ea*u jCf dai Civil 1 Al 3 Consolidated Aeronautics, Inc.

LA-4, LA-4A, LA-4-200 M ^s uA* _s AA*4? n "(iAart^e :

Installation of Century Automatic Flight System, Model YK954 consisting of a Century Yaw Damper System per Bulletin No. 2010, dated 12-20-86 and Master Drawing List No. 87A1164, dated 12-20-86 (14 Volt System) and/or later FAA/DAS approved revision.

FAA/DAS Approved Airplane Flight Manual Supplement P/N 68S991, dated 12-16-86 and/ or later approved FAA/DAS revision.

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

12-16-86 12-19-86 v/j-t. —.n...J S^^menJu/:

diy 4&*ec&0n>jqfj£ne- (Signature) William J. Thomas DAS Staff Coordinator DAS 7 SW (Titlt)

This certificate may bt IransferrtJ in tetordanu with FAR 21.47.

tAAFa*»l1IO-2(IO-«t)

.NJTTRUCTIONS: The transfer endorsement be.ow may be used to notify the appropriate FAA Region.. Office of the transfer of thu Supplemental Type Certificate.

The FAA will reissue the certificate in the name of the transferee and forward it to him.

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) ——————— A'vmbir mitJ ttrttlj (Cify. SUU, Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- December 19, 1986: Issued, Current. [certificate](https://openairdocs.org/files/sha256/9d/e8/9de87225b1400a676aaf4f93ac6904b13636f58e71b00d30d002b81daa1d25dc)

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