# STC SA3175SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model AK646 consisting of Century
IIB Autopilot with Optional Radio Coupler.
- Applied: December 15, 1976
- Status date: June 18, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-734](https://openairdocs.org/tcds/A-734)
- Certificate PDF: https://openairdocs.org/files/sha256/4d/19/4d19c4e0ee2fe6858f05b76ee039c6d20289652ce7d17a9a72e053ab5e81c000
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5B64CB8624547BA385256CC2000A94D3.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3175SW-D

## ADs that name it (0)

None.

## Approved models (2)

- Gulfstream American Corporation G-44 ([TCDS A-734](https://openairdocs.org/tcds/A-734))
- Gulfstream American Corporation G-44A ([TCDS A-734](https://openairdocs.org/tcds/A-734))

## 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.

iSl&aM/a£j>nA.

^Department of transportation-federal aoiation administration Supplemental 'Cgpe Certificate SA3175SW-D 'A> Century Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 /^^^ 3 Civil Air A- 7 3 4 Grumman G-44 (OA-14; J4F-2) and G-44A Installation of Mitchell Automatic Flight System Model AK646 consisting of Century IIB Autopilot with Optional Radio Coupler according to Bulletin No. 773, Revision 1, dated 5-25-77 and Master Drawing List No. 87A893, Reviion A, dated 5-25-77 Eligible on 28 Volt aircraft only. Also eligible on the above models when equipped with Type Certificate Approved Engine Items 108 (A) , (B) or (.C) and/or STC's SA4-928 (Retractable Tip Floats), SA835SO (290 H.P.

Lycoming Engines), SA4-958 (Increased Fuel Capacity) and SA4-2 (300 H.P. Lycoming Engines) FAA/DAS Approved Airplane Flight Manual Supplement ,t P/N 68S441-1, dated 7-8-77 lth °ther Previously approved modifications u< 7-8-77; 6-18-84, Revision 2 <*ri 4* ,/tn* •t'/e Don P. Watson (S>s™t>»<) Manager, Aircraft Certificatioa Division Southwest Region (Title)

>AA FO*M 8110-2 (10-68)

.NSTRUCTIONS: The transfer endowment be.ow may be used ,o notify the appropriate FAA Region.. Office of the transfer of thu Supplemental Type Certificate.

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

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

(Address of transferee) __ t City.Stott.

from (Name of grantor) (Print or type).

(Address of grantor) (Cify. SUU. out ZIP nJel Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- June 18, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/4d/19/4d19c4e0ee2fe6858f05b76ee039c6d20289652ce7d17a9a72e053ab5e81c000)

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