# STC SA3193SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK451 consisting of Century III autopilot with optional command automatic electronic pitch trim radio coupler and glide slope coupler.
- Applied: February 22, 1977
- Status date: June 19, 1984
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/05/79/05794179c17a1795269eba370cc25ea63d5a2979e3ced7391786d05ab7346abf
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/628AEE1A1CA4361385256CC2000A950C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3193SW-D

## ADs that name it (0)

None.

## Approved models (3)

- Beechcraft Corporation 36 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation A36 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation F33A ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## 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: SA319354-D This certificate issued to: Century Flight Systems, Inc.

F.M. 1195 P. O. Box 610 Mineral Wells, TX 76067 Purt 3 of the CIV11 Air Regulations.

Original Product - ype Bertificate Number: ЗА15 Make: Beech Model: F33A, 36, A36 Description of Type Design Change:

Installation of Mitchell Automatic Flight System Model AK451 consisting of Century III Autopilot with Optional Command Automatic Electronic Pitch Trim Radio Coupler, and Glide Slope Coupler according to Bulletin No, 575, Revision 8, dated 2-14-77 and Master Drawing List No. 87A681, Revision H, dated 2-14-77 Limilalinsandbindilions: Beech Model F33A 1s limited to S/N CE-316 and Up.

The following FAA Approved Airplane Flight Manual Supplements are required:

1. P/N 68S536, dated 4-22-77 for Beech Model F33A, S/N CE-316 and Up

2. P/N 68S537, dated 4-22-77 for Beech Models 36 and A36 Placard, P/N 13A600 is required for Command/Automatic Electronic Pitch Trim System.

This cortificate and the supperling dalu whic Compatibility of this modification with other previously approved modifications be determined by the ipstahich is the basis fur appre-val shull remain in effect until sur vendered, suspended, vevoked, or a lermination date is sherwise established by the Adminis brat. r if the Federal Aviation Administration .

Dale sapplicalin: February 22, 1977 Jule missued: 6-19-84, Revision 1 Date of Issuance: . April 22, 1977 Jale umended:

EDERAL AVIATIO By Direction of the Administrator Don P. Watson (Signature ) TOMINISTRATO Manager, Aircraft Certification Division Southwest Region (Title) 47 FAA FoRm 8110-2 (10-68)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee)._ (Address of transferee) (220155 pro sequins) from (Name of grantor) (Print or type) (Address of grantor) Extent of Authority (if licensing agreement):

Signature of grantor (In ink): - + 11= r.0~. 1090-262-100

## Every issue (1)

- June 19, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/05/79/05794179c17a1795269eba370cc25ea63d5a2979e3ced7391786d05ab7346abf)

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