# STC SA3434SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Century Automatic flight system Model AK938 consisting of a Century 31 Autopilot
- Applied: September 16, 1985
- Status date: August 10, 1986
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A51EU](https://openairdocs.org/tcds/A51EU)
- Certificate PDF: https://openairdocs.org/files/sha256/53/31/533135a814064dd0288e54916c33d7fc7c9c96779daec2e2e7c53a89bffd3c2b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/284E917CA2EA901E85256CC2000A9809.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3434SW-D

## ADs that name it (0)

None.

## Approved models (2)

- SOCATA TB 10 ([TCDS A51EU](https://openairdocs.org/tcds/A51EU))
- SOCATA TB 20 ([TCDS A51EU](https://openairdocs.org/tcds/A51EU))

## 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.

ttnitrf gtatu or Bcpartmcnt of transportation —^federal aoiation administration Supplemental 'Cgpe Certificate SA3434SWr-D Century Flight Systems, Inc, F,M. 1195 P.O. Box 610 Mineral Wells, Texas 76067 JA4^a6i*u>tiiJ!^^ 23 Federal Air A51EU Socata TB-20, TB-10 JtitA0rMZu>Ti*S^/yfie>-lJcA*a<n<~€iAainpe-: Installation of Century Automatic Flight System Model AK938 consisting of a Century 31 Autopilot per Bulletin No, 1069, dated 8-08-85 and Master Drawing List No, 87A1147 dated 8-08-85 (14 Volt System) and/or later FAA/DAS Approved Revision, FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S978, dated 9-09-85. Also Century 31 Autopilot Operator's Manual P/N 68S1024 dated 10-1-83 and/or later FAA/DAS Revision, Compatibility of this modification with other previously approve dmodifications must be determined by the installer.

9-16-85 9-23-85 Rev, 8-10-86 William J. Thomas DAS Staff Coordinator DAS 7 SW

This certificate may bt tfotaftmd in occarJanet with FAR 21.47.

»AA FCMM II10-J (1O-6I)

,NSTRUCTIONS: The transfer endorsement be.ow may be used to notify the appropriate FAA Regional Office of (he tranifer of thU Supplemental Type Certificate.

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

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name o/ transferee) _ (Address of transferee). t .VumtMf *nl ttrtet) from (Name of grantor) (Print or type) ——— (Address of grantor) __ retlj Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- August 10, 1986: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/53/31/533135a814064dd0288e54916c33d7fc7c9c96779daec2e2e7c53a89bffd3c2b)

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