# STC SA3490SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of a Century yaw damper, kit no YK997
- Applied: December 10, 1991
- Status date: January 10, 1992
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/b2/c3/b2c317d07aa24c408e65684432cbf4dcc539cb9413406b16ff1f48d5ad3015ed
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BF7ACE225D85554F85256CC2000A9898.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3490SW-D

## ADs that name it (0)

None.

## Approved models (11)

- Beechcraft Corporation 35-A33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation 35-B33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation 35-C33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation 35-C33A ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation E33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation E33A ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation E33C ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation F33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation F33A ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation F33C ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation G33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## 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.

United States of America Bcpartmcnt of transportation— jfcderal aviation administration Supplemental t^pe Certificate SA3490SW-D century Flight Systems, Inc.

F.M. 1195 P.O. BOX 610 '^Si&^jfi&jejleAjtartv o ^.J&f C\\ VI 1 Aeronautical v <^tr0a(tc£ —— /<ijw&>4ica&<Kurn0er<: "J AT K „ , Beech 33 Series, see page 2.

Installation of a Century Yaw Damper, Kit No. YK997 per Bulletin No. 2055 dated 01-03-92 and Master Drawing List No. 87A1219, dated 01-03-92 and/or later FAA-DAS approved revisions.

Pilot's Operating Handbook and/or FAA-DAS approved Airplane Flight Manual Supplement P/N 68S1054, dated 01-06-92 and/or later FAA-DAS approved revisions required.

See page 2 for additional limitations.

n^da^wMjfu^ ,&4<^^ Michele Manager Airplane Certification Office ASW-150 (Title)

**FAAFOOMSI 10-2(10-68)**

States of amtrita department of transportation—federal filiation administration Supplemental 'Cgpe Certificate(Continuation £heet) iSVMmwew SA3490SW-D Eligible Models:

35-A33, 35-B33, 35-C33, 35-C33A, E33, E33A, E33C, F33, F33A (S/N 315 & below), F33C (S/N CJ-30 & below), G33.

Century Automatic Flight System, Kit No. AK996, STC SA3489SW-D is compatible with, but not required by, this modification.

This approval should not be extended to other specific airplanes of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of the aircraft.

FAA FORM Biio-2-1 (10-69) PAGE 2 OF 2 PAGES

.NSTRUCTIONS: The transfer endorsement below m.y be used .o notify .he appropriate FAA Repon.. Office of the transfer of this Supplemental Type Certificate.

The FAA will reissue the certificate in .he name of the transferee and forward il .o him.

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

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

(Address of grantor) __ Extent of Authority (if licensing agreement):

(City.Slab. ««/ (Cify. St»U.

Signature of grantor (In ink):

## Every issue (1)

- January 10, 1992: Issued, Current. [certificate](https://openairdocs.org/files/sha256/b2/c3/b2c317d07aa24c408e65684432cbf4dcc539cb9413406b16ff1f48d5ad3015ed)

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