# STC SA3017SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK485 consisting of a Piper altimatic IIIC autopilot with optional command/ automatic electronic pitch trim system, radio coupler and glide slope coupler
- Applied: September 11, 1974
- Status date: August 1, 1984
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A20SO](https://openairdocs.org/tcds/A20SO)
- Certificate PDF: https://openairdocs.org/files/sha256/c3/36/c336425743aa48bf34333b8f4eea2ee2c411d607f7fd11b6ef70fcfb3904f52b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F9039EAB161DE8FB85256CC2000A92BB.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3017SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Piper Aircraft Inc. PA-31-325 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))

## 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.

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•Department of transportation —federal SUnation administration Supplemental 'Cuje Certificate i/tuvrvver' SA3017SW-D Century Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 Mineral Wells, XX 76067 JA^ /-ufit rf^t^n ^^ Jn&fettt^* , Civil Air A8EA Piper PA-31-325 -ft-af :

Installation of Mitchell Automatic Flight System Model AK485 consisting of a Piper Altimatic IIIC Autopilot with Optional Command/ Automatic Electronic Pitch Trim System, Radio Coupler and Glide Slope Coupler according to Bulletin No. 607, Revision 3, dated 9-27-77 and Master Drawing List No. 87A737, Revision C, dated 9-27-77 and/or later FAA Approved revisions of the above data.

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S201-1-S, dated 1-17-78 is required for Piper Model PA-31-325, S/N 31-7712000 and below. FAA/DAS Approved Pilot's Operating Handbook Supplement, P/N 68S605, dated 1-17-78 is required for Piper Model PA-31-325, S/N 31-7712001 and Up and/or later FAA Approved revisions of the above supplements.

See Continuation Sheet, Page 2 a part of this STC other /i^ 'air inA4n.

~S a£r atffrtf/tff •' ./i.u.*/* 8-8-75; 2-9-76; 1-17-78;

8-1-84, Revision 4 P. Watson (S>gnatu,f, Manager, Aircraft Certification Division Southwest Region (Tillt)

This cirtificatt may be t'amfrr'td in aciorjance with f-AR 21.17.

Btpartment of ^transportation—federal Station administradon Supplemental Tgpt Certificate(Continuation $htet) SA3017SW-D, Revision A, dated 8-1-84 LIMITATIONS AND CONDITIONS:

A placard stating "Conduct Trim Check Prior to Flight - See AFM" is required for aircraft having an Airplane Flight Manual. A placard stating "Conduct Trim Check Prior to Plight - See POH" is required for aircraft having a Pilot's Operating Handbook.

FAA FORM »110-2-1 (10-09) Tint urtifeaU may ti tronsfmttl in oeenrdaoci until FAR 21.47.

**PAGE 2OF 2 PAGES**

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of" transferee) (Number and street) (City, State, and ZIP code) from (Name of grantor)(Print or type) (Address of grantor) (Number £ street) (City, State, and ZIP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink)

## Every issue (1)

- August 1, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/c3/36/c336425743aa48bf34333b8f4eea2ee2c411d607f7fd11b6ef70fcfb3904f52b)

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