# STC SA3271SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell yaw damper system model YK631.
- Applied: February 1, 1978
- Status date: March 28, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-777](https://openairdocs.org/tcds/A-777)
- Certificate PDF: https://openairdocs.org/files/sha256/f8/ad/f8ad880017953125bb1c3fbac2525b643509353fd361c755fef90c1f5a79abbb
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/10FF68F0A018846086257DB1005A8638.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3271SW-D

## ADs that name it (0)

None.

## Approved models (9)

- Beechcraft Corporation 35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))
- Beechcraft Corporation 35R ([TCDS A-777](https://openairdocs.org/tcds/A-777))
- Beechcraft Corporation A35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))
- Beechcraft Corporation B35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))
- Beechcraft Corporation C35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))
- Beechcraft Corporation D35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))
- Beechcraft Corporation E35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))
- Beechcraft Corporation F35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))
- Beechcraft Corporation G35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))

## 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.

>sl£a4t/a/44>nA .

Bepartmcnt of transportation — jp ederal 2ttriation administration Supplemental l^pe Certificate SA3271SW-D Century Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 Jfi&^ytfwde&4:cv™f^JiwJ& 777 35, A35, B35, C35. D35, E35, F35, G35, 35R nsaf .

Installation of Mitchall Yaw Damper System Model YK631 according to Bulling No. 758 Rev. 4, dated 3-30-78 and Master Drawing List No. 87A897 Rev. D dated 3-30-78 (14 Volt System), or later FAA approved revision.

Pilot's Operating Handbook and »A/DAS Apprwed Airplane Flight Manual Supplement P/N 68S686 dated 3-3-78 is required for aircraft owners with a Pilot's Operating Handbook and FAA Approved Airplane Flight Manual.

FAA/DAS Approved Airplane Flight Manual Supplement P/N 68S660 dated 3-3-78 is required for aircraft owners with an airplane flight manual.

2-1-78 Previously approved modifications w _ii_78; 3-28-84 Revision 2 Don P. Watson Manager, Aircraft Certification Division Southwest Region (Title)

**FAA FOIM 8110-2 (10-68)**

INSTRUCTIONS: The .rankerendorsement below may be used to notify the appropriate FAA Region.. Office of the transfer of thU Supplemental Type Certificate.

The FAA will reinue the certificate in the name of the tranfferee and forward it to him.

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

(Address of transferee). ( MunAtr tnJ ttrtet) < Ctt>.

from (Name of grantor) (Print or type).

(Address of grantor) __ (,\'*mla »nJ tirtttj Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- March 28, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f8/ad/f8ad880017953125bb1c3fbac2525b643509353fd361c755fef90c1f5a79abbb)

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