# STC SA3108SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model
AK446 or AK446FD consisting of Century IV Autopilot or Century IV Flight Director
Autopilot with Optional Remote Annunciator
- Applied: January 30, 1976
- Status date: August 16, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A16](https://openairdocs.org/tcds/3A16)
- Certificate PDF: https://openairdocs.org/files/sha256/be/7c/be7cd3825a1469ac7163aea66e28d0b909cacc227e296118fd6ab583cb0a22fb
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5C07AC9450B071F985256CC2000A93EC.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3108SW-D

## ADs that name it (0)

None.

## Approved models (11)

- Beechcraft Corporation 95-55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation 95-A55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation 95-B55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation 95-B55A ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation 95-B55B ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation 95-C55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation 95-C55A ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation D55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation D55A ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation E55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation E55A ([TCDS 3A16](https://openairdocs.org/tcds/3A16))

## 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: SA310254-D This certificate issued to: P.M. 1195 Century Flight Systems, Inc.

P.O. Box 610 Mineral Wells, IX 76067 Part 3 of the CIV11 Aix Fregulations.

Original Product - Type bertificate Numben: ЗА16 Beech Model: 95-33, 93-А39, 95-859, 95-8954, 95-В928, 93-033, 95-C55A, D55, D55A, E55 and E55A Description of Type Design Change: Installation of Mitchell Autonatic Flight Systen Model AК446 or AK446FD consisting of Century IV Autopilot or Century IV Flight Director Autopilot with Optional Remote Annunciator according to Bulletin No. 569-1, Revision 2, dated 8-27-76 and Master Drawing List No. 87A844, Revision B, dated 8-27-76.

Limitations and Conditions: The following FAA/DAS Approved Airplane Flight Manual Supplements are required,

1. P/N 685349-1, dated 7-22-76 is required for Beech Models 95-55, 95-A55, 95-B55, 15-B5SA and 95-B55B. 2, P/N 685350-1, dated 7-22-76 is required for Beech Models 95-C55, 95-C55A, D55, D55A, E55 and E55A. Placard P/N 13A660 is required.

Compatibility of this modification with other previously approved modifications must be determined by the installer.

Date of Application: 1-30-76 Datorissuca: 7-22-76; 9-22-76; 8-16-84, Revision 3 Date of Issuance: 2-10-76 Date Amended:

**FEDERAL AVIATION**

• Don P. Watson (Signature) TOMINISTRATO Manager, Aircraft Certification Division Southwest Region (Tille)

47.

**FAA FOR 8110-2 (10-68)**

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee).

(Address of transferee) - (Yumber and streel) (City. Stake, and 2IP code) from (Name of grantor) (Print or type) - (Address of grantor) (Number and sireel;

(City, Stale, and ZIP code, Extent of Authority (if licensing agreement):

Date of Transter:

Signature of grantor (In ink): -

- 842-080

## Every issue (1)

- August 16, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/be/7c/be7cd3825a1469ac7163aea66e28d0b909cacc227e296118fd6ab583cb0a22fb)

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