# STC SA3476SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Century Flight Systems Inc, United States
- Description: Installation of a Century Automatic Flight System Model AK983 consisting of a Century 2110/2130/2131/31300/31301/31310/31320/31321/31330/31331 Autopilot.
- Applied: May 23, 1988
- Status date: December 20, 2007
- Product: Aircraft, Single-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/9a/4a/9a4ab47ee5fa0469854f552fd04451ff2b59f12312cd4610b77d6e25840bb040
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AB6CD9174678350E862574D6004BDB40.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3476SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Raytheon Aircraft Company V35B ([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.

Number SA3476SW-D

This certificate, issued to Century Flight Systems, Inc.

3003 FM 1195 P.O. Box 610 Mineral Wells, TX 76067 certifies that the change in type design for the following product with the limitations and conditions therefore as specified hereon meets the airworthiness requirements of Part 3 of the Civil Air Regulations.

Original Product ⎯ Type Certificate Number: 3A15 Make: BEECH Model: V35B

Description of Type Design Change: Installation of a Century Automatic Flight System Model AK983 consisting of a Century 2110/2130/2131/31300/31301/31310/31320/31321/31330/31331 Autopilot per Bulletin No. 2040, dated 05-23- 88, Revision 2 dated 07-12-07 and Master Drawing List No. 87A1194, dated 05-23-88, Revision A dated 07-12-07 (28 Volt System) or later FAA/DAS Approved revision. F AA/DAS Approved Supplement to Pilot's Operating Handbook and/or FAA/DAS Approved Airplane Flight Manual Supplements P/N 68S1021 dated 10-24-88 Rev. 1 dated 05-23-94 and P/N 68S1021-1 dated 07-12-07 or later FAA/DAS Approved Revisions.

Limitations and Conditions: Eligible on Beech model V35B. Compatibility of this modification with other previously approved modifications must be determined by the installer. If the holder agrees to permit another person to use this certificate to alter the product, the ho lder shall give the other person written evidence of that permission. The certificate basis for this modification is per Type Certificate Data Sheet (TCDS) 3A15.

(Signature) Loyd M. Higgins DAS Administrator DAS 700098 SW (Title)

## Every issue (2)

- December 20, 2007: Amended, Current. [certificate](https://openairdocs.org/files/sha256/9a/4a/9a4ab47ee5fa0469854f552fd04451ff2b59f12312cd4610b77d6e25840bb040)
- August 8, 1988: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/9a/4a/9a4ab47ee5fa0469854f552fd04451ff2b59f12312cd4610b77d6e25840bb040)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.