# STC SA1787SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model AK447 or AK447FD consisting of Century IV autopilot or Century IV Flight Director autopilot with Command/Automatic electronic pitch trim.
- Applied: January 18, 1974
- Status date: July 16, 1984
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A16](https://openairdocs.org/tcds/3A16)
- Certificate PDF: https://openairdocs.org/files/sha256/4b/d9/4bd9aa426102ad5a23c2a3ed159658a0c11ccbbe2afeff859221928ea9b7a3de
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BC7F48AF9F69838E85256CC10083D081.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1787SW

## ADs that name it (0)

None.

## Approved models (2)

- Beechcraft Corporation 58 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation 58A ([TCDS 3A16](https://openairdocs.org/tcds/3A16))

## 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.

iSltjattta/u>nA Btpartmtnt of 'transportation federal aoiation administration Supplemental Certificate SA1787SW Century Flight Systems, Inc.

F.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 ^^ 3A16 Beech 58 and 58A tMff :

Civil Air Installation of Mitchell Automatic Flight System Model AK447 or AK447FD consisting of Century IV Autopilot or Century IV Flight Director Autopilot with Command/ Automatic Electronic Pitch Trim according to Bulletin No. 570, Revision (4), dated 7-1-75 and Master Drawing List No. 87A702, Revision C, dated 7-1-75.

The following FAA Approved Airplane Flight Manual Supplements are required:

1. P/N 68S154, dated 1-22-74 for Century IV Autopilot System in Beech 58 and 58A.

2. P/N 68S155, dated 1-22-74 for Century IV Flight Director Autopilot in Beech 58 and 58A.

January 18, 1974 January 22, 1974 modifications .

L/«& «•** — /. 8-14-75; 7-16-84, Revision 2 ?Jo6 <„„,„,/<,/:

Don P. Watson Manager, Aircraft Certification Division Southwest Region (Ttti*)

Ttiu terliftcale ma> bt ttani/tr'td in tKcardanct with F-AR 2!.t7.

INSTRUCTIONS; The transfer endorse men I below may be used !o nolify the appropriate FAA Regional Office of ihe transfer of ihii Supplemental Type Cerulicaie.

The FAA will reissue ihe certificate in the name of [he transferee and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Numbtr and itreetj ( City. Stall, and ZIP from (Name of grantor) (Print or type) (Address of grantor) {Number and HrrrtJ , Stall, an Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

**C FAA AC 69,5536**

## Every issue (1)

- July 16, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/4b/d9/4bd9aa426102ad5a23c2a3ed159658a0c11ccbbe2afeff859221928ea9b7a3de)

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