# STC SA3194SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK638 consisting of Piper Altimatic IIIC autopilot with optional radio coupler and glide slope coupler.
- Applied: March 15, 1977
- Status date: June 19, 1984
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A13](https://openairdocs.org/tcds/2A13)
- Certificate PDF: https://openairdocs.org/files/sha256/35/0f/350f8745c9769232f2f4e9e94d2ffa2cbc539c25061b980705bb974c8b4a46f2
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AB4D9081935D407685256CC2000A950E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3194SW-D

## ADs that name it (0)

None.

## Approved models (2)

- Piper Aircraft Inc. PA-28R-201 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- Piper Aircraft Inc. PA-28R-201T ([TCDS 2A13](https://openairdocs.org/tcds/2A13))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA319454-D This certificate issued to: Century Flight Systems, Inc.

F.M. 1195 P. O. Box 610 Mineral Wells, IX 76067 Purt 3 of the CIV11 Aix Regulations.

Original Product -Type Pertificate Number: 2A13 Piper Model: PA-28R-201, PA-28R-201T Description of Type Design Change:

Installation of Mitchell Automatic Flight System Model AK638 consisting of a Piper Altimatic IIIC Autopilot with Optional Radio Coupler and Glide Slope Coupler according to Bulletin No. 765, Revision 3, dated 9-27-77 and Master Drawing List No. 87A915, Revision C, dated 9-27-77 and/or later FAA Approved Limitations and Conditions:

FAA/DAS Approved Pilot's Operating Handbook Supplement, P/N 68S531-1-S, dated 12-14-77 and/or later FAA Approved revisions of the above supplement.

A placard stating "Conduct Trim Check Prior to Flight - See POH" to be installed in clear view of the pilot.

Compatibility of this modification with other previously approved modifications

Date of Application: 3-15-77 Jule wissued: 12-14-77; 6-19-84, Revision 2 Date of Issuance: . 3-24-77 I ate unended:

FEDERA AVIATION By Direction of the Administrator Don P. Watson (Signalure ) *OMINISTA Manager, Aircraft Certificatión Division Southwest Region (Title) 47 FAA FoRM 8110-2 (10-68)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental 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): - Date of Transfer:

Signature of grantor (In ink):

+118 r. 0~: 1090-442-180

## Every issue (1)

- June 19, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/35/0f/350f8745c9769232f2f4e9e94d2ffa2cbc539c25061b980705bb974c8b4a46f2)

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