# STC SA3109SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model AK450 consisting of
Century III Autopilot with Optional Command Automatic Electronic Pitch Trim
System, Radio Coupler and Glide Slope Coupler
- Applied: January 30, 1976
- Status date: May 24, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A16](https://openairdocs.org/tcds/3A16)
- Certificate PDF: https://openairdocs.org/files/sha256/44/17/4417af273c88c3d384b6c515b091d6ec4d2df9f2a7b9c6e8cb903af1bd05be96
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/83B19D61774B36CF85256CC2000A93EE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3109SW-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.

Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA310954-1 This certificate issued to: Century Flight Systems, Inc.

F.M. 1195 P. O. Box 610 Mineral Wells, IX 76067 Certifies that the change in the type design for the following product with the limitalions and conditions thorefor as specified hereon meets the airworthiness reguirements of Part 3 of the Civi1 Air Regulations Original Product - Type Certificate Number: 3A16 Make: BECH Model: 95-55, 95-A55, 95-B55, 95-B55A, 95-B55B, 95-C55, 95-C55A, D55, D55A, E55 and ESSA Description of Type Design Change:

Installation of Mitchell Automatic Flight System Model AK450 consisting of Century III Autopilot with Optional Command Automatic Electronic Pitch Trim System, Radio Coupler and Glide Slope Coupler according to Bulletin No. S73-1, dated 1-30-76 and Master Drawing List No. 87A843, dated 1-30-76.

Linilalions and bindilions: The following FAA Approved Airplane Flight Manual Supplements are required: P/N 68S346, dated 2-10-76 for Beech Models 95-55, 95-A55, 95-B55, 95-B55A, and 95-B55B; P/N 68S347, dated 2-10-76 for Beech Models 95-C55, 95-C55A, D55, D55A;

P/N 68S344, dated 2-10-76 for Beech Models E55 and E55A; P/N 68S345, dated 2-10-76 for Beech Models 95-B55 and 95-B55A.

**SEE PAGE 2, CONTINUATION SHEET, A PART OF THIS SIC.**

Date of Application: 1-30-76 Jute missued: 5-24-84, Revision 1 Date of Issuance: 2-10-76 Jake unvended:

EDERA AVIATION By Direction of the Administrator - .

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

47.

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

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA31095W-D, Revision 1, dated 5-24-84 Limitations and Conditions:

Supplemental Flight Manual, P/N 685348, dated 2-10-76 is required for Beech Models E55 and E55A (For airplanes without flight manuals).

Placard P/N 13A660 is required for Optional Command/Automatic Electronic Pitch Trim Installation.

**FAA FORM 8110-2-1 (10-60) PAGE 2 OF 2 PAGES**

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

(Address of transferee). (Number and streel) (City. State, and RIP 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):

Signature of grantor (In ink): -

382.020 .ron.

## Every issue (1)

- May 24, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/44/17/4417af273c88c3d384b6c515b091d6ec4d2df9f2a7b9c6e8cb903af1bd05be96)

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