# STC SA3152SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model AK621 consisting of Century IV
Autopilot or AK621FD consisting of Century IV Flight Director Autopilot with Optional
Remote Annunciator
- Applied: July 23, 1976
- Status date: June 6, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A3SO](https://openairdocs.org/tcds/A3SO)
- Certificate PDF: https://openairdocs.org/files/sha256/d9/f1/d9f13fa43d0bdde64f9b8ea1988806daa4b58f32b5b2e1205f5fa06850892d4b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0B3BF64D5AFE216285256CC2000A9486.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3152SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Piper Aircraft Inc. PA-32R-300 ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))

## 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.

*sl4GiUjia>£i4>nA,', Ca^MriaJ \Jr Bepartment of 'Cransportation —federal 2toiation administration Supplemental 'Cgpe Certificate tSbwrrvvew SA3152SW-D Century Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 A3 SO Piper PA-32R-300 ^lv _._------- -*'— ,j Installation of Mitchell Automatic Flight System Model AK621 consisting of Century IV Autopilot or AK621FD consisting of Century IV Flight Director Autopilot with Optional Remote Annunciator according to Bulletin No. 747, dated 7-21-76 and Master Drawing List No. 87A874, dated 7-21-76.

FAA/DAS Approved Pilot's Operating Handbook Supplement, P/N 68S389, dated 7-30-76 is required.

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

»odif Ications ,'iU' 44&4& 7-23-76 !/„&„**<«•</: 6-6-84, Revision 1 — ^ 0& 4*tttf

• s/.u- df' Don P. Watson Manager, Aircraft Certification Division Southwest Region (Title)

This certificate may be transferred in accordance with f-'AR 21.17.

FAA fotM SI 10-2 (10-68)

.NSTRUCTIONS: The transfer endorsement be.ow may be used to notify the appropriate FAA IUgto-1 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) __ (Ot)'. Stale, from (Nome of grantor) (Print or type) (Address of grantor) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- June 6, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/d9/f1/d9f13fa43d0bdde64f9b8ea1988806daa4b58f32b5b2e1205f5fa06850892d4b)

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