# STC SA3185SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK657 consisting of Century IIB autopilot with optional radio coupler.
- Applied: January 27, 1977
- 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/sha256/93/e4/93e4e81ce119c80a5f5894b70c84eeff08aae62596d3d29a5314a125441d30f1
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/86AFB53ABDE21A1585256CC2000A94F2.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3185SW-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.

Bcpartment of transportation —federal Stoiation administration Supplemental l^gpe Certificate SA3185SW-D Century Flight Systems, Inc.

F.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 jA&fyfi&dcA*jpmfc^JA&fc>dic^^ 4a ^^f Civil Air <-Sl£a-u/a/{*> A— 734 Grunnnan G-44 (OA-14; J4F-2) and G-44A Installation of Mitchell Automatic Flight System Model AK657 consisting of Century IIB Autopilot with Optional Radio Coupler according to Bulletin No. 786, Revision 1, dated 5-25-77 and Master Drawing List No, 87A903, Revision A, dated 5-25-77.

Eligible on 14 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, P/N 68S500-1, dated 7-11-77 is required. • modif ications *»/: 7-11-77; 6-18-84, Revision 2.

Don P. Watson Manager, Aircraft Certification Division Southwest Region ^_ (Title)I - r

17.

.^RUCTIONS: The .ransfer endorsement be.ow may be used ,o notify .he appropriate FAA Keponai Office of the transfer of thit Supplemental Type Certificate.

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

TRANSFER ENDORSEMENT Transfer the ownership of Supplemenbd Type Certificate Number to (Name of transferee)_ (Address of transferee) __ 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 18, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/93/e4/93e4e81ce119c80a5f5894b70c84eeff08aae62596d3d29a5314a125441d30f1)

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