# STC SA3042SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK456 or AK456FD consisting of Century IV autopilot or Century IV flight director autopilot with optional remote annuciator panel.
- Applied: January 24, 1975
- Status date: August 16, 1984
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A20](https://openairdocs.org/tcds/3A20)
- Certificate PDF: https://openairdocs.org/files/sha256/03/5f/035f92e30be7239145d9942e4485c6effdfeb8129458bac0a0093a647a50c315
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A24D97C55EC91F6685256CC2000A9315.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3042SW-D

## ADs that name it (0)

None.

## Approved models (5)

- Beechcraft Corporation 65-90 ([TCDS 3A20](https://openairdocs.org/tcds/3A20))
- Beechcraft Corporation 65-A90 ([TCDS 3A20](https://openairdocs.org/tcds/3A20))
- Beechcraft Corporation B90 ([TCDS 3A20](https://openairdocs.org/tcds/3A20))
- Beechcraft Corporation C90 ([TCDS 3A20](https://openairdocs.org/tcds/3A20))
- Beechcraft Corporation E90 ([TCDS 3A20](https://openairdocs.org/tcds/3A20))

## What the certificate says

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

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA30425W-D This certificate issued to: Century Plight Systems, Inc.

F.M. 1195 P.O. Box 610 Mineral Wells, TX 76067 Part 3 of the CIVI1 AIr Regulations.

Original Product - Type bertificate Number: 3A20 Make: Beech Model: 65-90, 65-A90, B90, C90 and E90 Description of Type Design Change:

Installation of Mitchell Automatic Flight System Model AK456 or AK456FD consisting of a Century IV Autopilot or a Century IV Flight Director Autopilot with Optional Remote Annunciator Panel according to Bulletin No. 579. Revision 6, dated 1-24-78 and Master Drawing List No. 87A765, Revision F, dated 1-24-78 (28 Volt System) and/or later FAA Approved Revisions of the above data.

Limitations and Conditions: Also eligible on Models 65-90 and 65-490 when modified in accordance with Notes 7, 11, 17, 18 or 19 of Type Certificate Data Sheet No. 3A20, Rev. 31, dated 4-15-76.

See Continuation Sheet, Page 2, a part of this STC Compatibility of this modification with other previously approved modifications must be determined by the installer.

Date of Application: 1-24-75 Date Reissued: 5-15-75; 7-22-78; 2-24-78;

8-16-84, Revision 4 Date of Issuance: . 1-31-76 Date Amended:

FEDERAL AVIATION Don P. Watson (Signature ) OMINISTRA Manager, Aircraft Certification Division Southwest Region (Title)

47.

FAA FoR 8110-2 (10-68)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA30425N-D, Revision 4, dated 8-16-84 Limitations and Conditions:

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S219-2, dated 2-24-78 is required by Beech Models B90 and C90, S/N LJ-667 and Below. FAA/DAS Approved Airlane Flight Manual Supplement, P/N 68S635, dated 2-24-78 is required for Beech Models 65-90 and 65-A90. Pilot's Operating Handbook and FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S636, dated 2-24-78 is required for Beech Model C90, S/N LJ-668 and After Except S/N LJ-670, and/or later FAA Approved Revisions of the above Supplements. Placard, P/N 13A660 is required for an Airplane Flight Manual.

Placard, P/N 13A660-1 is required for a Pilot's Operating Handbook.

**FAA FORM 8110-2-1 (10-69) 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 16, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/03/5f/035f92e30be7239145d9942e4485c6effdfeb8129458bac0a0093a647a50c315)

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