# STC SA3220SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell yaw damper system model YK676
- Applied: May 18, 1977
- Status date: December 7, 1983
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/ba/7b/ba7bdc6c49580136e4de62bf8e734e07ac1c3ed87bb070ad1a1304eb2b0d7316
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/16CCDC8C1409AC2B85256CC2000A9574.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3220SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Beechcraft Corporation V35B ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## 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: SA32205W-D This certificate issued to: Century Flight Systems, Inc.

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

Original Product -Type bertificate Number: 3A15 Make: Beech Model: V35B Description of Type Design Change:

Installation of Mitchell Yaw Damper System Model YK676 according to Bulletin No. 805, dated 5/17/77 and Master Drawing List No. 87A933, dated S/17/77, or later FAA approved revision.

Limilalions and bindiliona: 1. E11g1ble on 28 VoIt Airgraft Only.

2. Pilot's Operating Handbook and FAA/DAS Approved Airplane Flight Manual Supplement P/N 685559, dated 6/20/77 1s required.

3. Also eligible on Beech Model V35B When Modified in Accordance with STC SA1035WE (Turbocharged Engines)

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

Date of Application: 5/18/77 Jule missed: 12/7/83 Rev1s1on 1 Date of Issuance: 6/20/77 Jale umended:

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

47.

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

Signature of grantor (In ink): - + 11=r. 0~. 1098-262.170

## Every issue (1)

- December 7, 1983: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/ba/7b/ba7bdc6c49580136e4de62bf8e734e07ac1c3ed87bb070ad1a1304eb2b0d7316)

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