# STC SA3142SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model AK600 consisting of Century IV Autopilot or Model AK600FD consisting of Century IV Flight Director Autopilot with Optional Remote Annunciator.
- Applied: May 20, 1976
- Status date: June 6, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 6A1](https://openairdocs.org/tcds/6A1)
- Certificate PDF: https://openairdocs.org/files/sha256/b5/b7/b5b78486c31f4cb7af175494b18f7bf8cbf3548c2e41b6fb0c67287a27023132
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/203A392556AFC39885256CC2000A946A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3142SW-D

## ADs that name it (0)

None.

## Approved models (4)

- Twin Commander Aircraft LLC 500-A ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft LLC 500-B ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft LLC 500-S ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft LLC 500-U ([TCDS 6A1](https://openairdocs.org/tcds/6A1))

## 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.

Bcpartment of transportation -federal Stoiation administration Supplemental 'Cgpe Certificate SA3142sw-D Century Flight Systems, Inc.

F.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 .4n&MM*ti(>i& 3 <&ics Civil Air €&tu^n1a/ <J£>ocu&c£ —— < j 6A1 Rockwell Commander 500A, 500B, 500S, 500U Installation of Mitchell Automatic Flight System Model AK600 consisting of Century IV Autopilot or Model AK600FD consisting of Century IV Flight Director Autopilot with Optional Remote Annunciator according to Bulletin No. 724, Revision 1, dated 7-7-76 and Master Drawing List No. 87A863, Revision A, dated 7-7-76.

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S386, dated 6-1-76 is required.

Placard, P/N 13A660 is required.

modifications 7-29-76; 6-6-84, Revision 2 ^s && litftstuf**/ • ,/J,U-J</(fl*6?/*<'!M 4f 4&f "'/ Don P. Watson Manager, Aircraft Certification Division Southwest Region (Title)

FAAFotM SI 10-2(10-68)

: The transfer endowment bd———.y be «cd ———* *« -PP«P—— the transfer of ihii Supplemenul Type Certificate.

The FAA wilt reissue the certificate in the name of the tramferee and forward it to him.

TRANSFER ENDORSEMENT Transfer die ownership of Supplemental Type Certificate Number to (Name of transferee)_ (Address of transferee) — I Xtunttr *nd ttrtct) from (Name of grantor) (Print or type).

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

Signature of grantor (In ink):

## Every issue (1)

- June 6, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/b5/b7/b5b78486c31f4cb7af175494b18f7bf8cbf3548c2e41b6fb0c67287a27023132)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.