# STC SA3427SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Century automatic flight system Model AK930 consisting of a Century 31 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/sha256/79/7a/797a68ddc5c95098b377016f60691a3955d3f7adf5c22ac036413aac2d717405
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/726D14F873DEA23785256CC2000A97F5.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3427SW-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

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: SA34275W-D This certificate issued to: Century Flight Systems, inc, .0. box 610 Mineral Wells, Texas 76067 Certifies that the change in the type design for the following product with the limitations and conditions therefer as specified hereon meets the airworthiness reguirements of Part 23 of the Federal Air Regulations Original Product -Type bertificate Numben: A17EV Make: Britten-Norman Model: BN-2B-26 Description of Type Design Change:

Installation of Century Automatic Flight System Model AK930 consisting of a Century 31 Autopilot according to Bulletin No. 1060 dated 9-04-84 and Master Drawing List No. 87A1139 dated 9-04-84, (28 Volt System) or later FAA approved revision.

Pilot's Operating Handbook and FAA/DAS Approved Airplane Flight Manual Supplement dated 9-25-84 (P/N 68S71 is required,) Compatibility of this modification with other previously approved modifications must be determined by the installer.

Date of Application: 11-28-84 Date Reissued:

Date of Issuance: 11-28-84 Date Amended:

FEDERAL AVIATION By Direction of the Administrator PAINI STRATO DAS Staff Coordinator DASTSW W1111am L. (Johns/ Signature) (Title)

47.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) - (Address of transferee) (Yumber and streel) (Cirj, Stake, and RIP code ) from (Name of grantor) (Print or sype) (Address of grantor) (Number and sireel;

(City, Stake, and ZIP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink): - + 118 r. 0 n. 1090-882-180

## Every issue (1)

- November 28, 1984: Issued, Current. [certificate](https://openairdocs.org/files/sha256/79/7a/797a68ddc5c95098b377016f60691a3955d3f7adf5c22ac036413aac2d717405)

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