# STC SA3218SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK674 consisting of Century IV autopilot or AK674FD consisting of Century IV flight director autopilot with optional remote annunciator.
- Applied: May 18, 1977
- Status date: December 7, 1983
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/42/4c/424c9a9b0f3eee5e4d74df381e0e463af70186b6d4f27b03a7dbf7d1ef59a5b2
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AA230D9B7D3FE89585256CC2000A9568.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3218SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Beechcraft Corporation V35B ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## 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.

tLirittd £>tatti af SUncrita Bepartment of transportation federal 2toiation administration Supplemental UTupe Certificate SA3218SW-D Century Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 ^wJM&^e>/kuww pj j •% »j_ i/tenu&a&e-nA'.

_ . _3A15 Beech Installation of Mitchell Automatic Flight System Model AK674 consisting of a Century IV Autopilot or AK674FD consisting of a Century IV Flight Director Autopilot with Optional Remote Annunciator according to Bulletin Mo. 803, Rev.

3, dated 10/5/78 and Master Drawing list No. 87A931, Rev. C dated 10/5/78 (28 volt system) and/or later FAA approved revisions of the above data.

eligible on Beech Model V35B When Modified in Accordance with STC SA1035WE (Turbocharged Engines)

2. Pilot's Operating Handbook and FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S557, dated 6/20/77 is required and/or later FAA approved revision.

3. Placard, P/N 13A660-1 is required.

4. Compatibility of this modification with other previously approved modif itatepns must be determined by the installer.

^evened, -or- M- - <4 &£• /,™: 5/18/77 Lf.,6 r,**..,,/ 4/10/78; 11/8/78; 12/7/83 f . Revision 3-s a/f a rttr ttdtfl •' Don P. WatSOn (Signature) Manager, Aircraft Certification Division Southwest Region (Title)

FAA FO«M 8110-2 (10-68)

INSTRUCTIONS: The transfer <adorscmen, below may be used to notify the appropriate FAA Regional Office of the transfer of thU Supplemental Type Certificate.

The FAA will reissue the certificate in the name of the transferee and forward it 10 him.

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

(Address of transferee).

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

(Address of grantor) __ (Xumbtt (Cify, Suit, au/ZlPt*tel Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

A 11 « r. o n i «•«-««»•«»<'

## Every issue (1)

- December 7, 1983: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/42/4c/424c9a9b0f3eee5e4d74df381e0e463af70186b6d4f27b03a7dbf7d1ef59a5b2)

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