# STC SA3428SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Century automatic flight system Model AK931 consisting of a Century 21 autopilot.
- Applied: November 28, 1984
- Status date: November 28, 1984
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A17EU](https://openairdocs.org/tcds/A17EU)
- Certificate PDF: https://openairdocs.org/files/sha256/1a/b5/1ab51308499226fafd5bbcea83c13409241c9369738cff63ecccca43ef695a01
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4173FC565E73A02F85256CC2000A97F8.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3428SW-D

## ADs that name it (0)

None.

## Approved models (1)

- B-N Group Ltd. BN-2B-26 ([TCDS A17EU](https://openairdocs.org/tcds/A17EU))

## 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 £tatu or anrrica Btparttncnt of transportation— fedtral a&iation administration Supplemental t^pe Certificate SA3428SW-D Century Flight Systems, Inc.

P.O. Box 610 Mineral Wells, Texas 76067 JfoJiufi&de&ijamf^jA^^cdiowtri^ J^MAi*v^^ 23 ^^^ Federal Air <sl*a*i/a& A 1 7 EU Britten-Norman BN-2B-26 Installation of Century Automatic Flight System Model AK931 consisting of a Century 21 Autopilot according to Bulletin No. 1061 dated 9-04-84 and Master Drawing List No. 87A1140 dated 9-04-84 (28 Volt System) or later FAA Approved Revision.

Pilots Operating Handbook and FAA/DAS Approved Airplane Flight Manual Supplement dated 10-5-84 (P/N 68S971) is required.

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

e^fum, . H-28-84 H-28-84 J^ Zff^rL^>^^ Si&cvrrvi>nA&foaJer-*sf V . ' V (Signature} William DAS Staff Coordinator DAS7SW (Title) .iam L. Jbnr

Tkii artifitate may be trantfernd in accordance with FAR 21.47.

FAA PtMo II10-2 (10-61)

INSTRUCTIONS: The transfer endowment below may the transfer of Ulii Supplemental Type Certificate.

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

be used to notify the appropriate FAA Regional Office of

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

(Cit}. Stalt.««/ ZI from (Name of grantor) (Print or type).

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

Signature of grantor (In ink):

## Every issue (1)

- November 28, 1984: Issued, Current. [certificate](https://openairdocs.org/files/sha256/1a/b5/1ab51308499226fafd5bbcea83c13409241c9369738cff63ecccca43ef695a01)

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