# STC SA3118SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system AK448, Century IV autopilot or AK448FD, Century IV autopilot flight director with optional remote annunciator.
- Applied: March 8, 1976
- Status date: July 9, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/f7/d2/f7d292d7b8aa1b1e3561d176311feb7323a177593eb74ce6901676ee6a73bc67
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4DFCA7EEDABB71D185256CC2000A940A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3118SW-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: SA31185W-D This certificate issued to: Century Flight Systems, Inc.

F.M. 1195 P. O. Box 610 Mineral Wells, IX 76067 Purt 3 of the CIVI1 Air Regulations:

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

Installation of Mitchell Automatic Flight System Model AK448 consisting of Limitations and Conditions: Beech Model F33A is limited to S/N CE-316 and up only.

is required for Beech Model F33A, S/N CE-316 and up. FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S356-2, dated 7-22-76 1s required for Beech Model 36 and A36.

Placard, P/N 13A660 is required.

r if the Federal Aviation Administration .

Date of Application: 3-8-76 Jule misser: 6-8-76; 7-27-76; 9-24-76;

7-9-84, Revision 4 Date of Issuance: 3-12-76 Date Amended:

FEDERAL AVIATIO Me in Be Le teresa Don P. Watson (Signature ) TOMINISTRANO 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). (Number and streel) (City, Stale, and 2IP code ) from (Name of grantor) (Print or type) - (Address of grantor) (pose pur sequen) Extent of Authority (if licensing agreement):

Signature of grantor (In ink): - con. 32-080

## Every issue (1)

- July 9, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f7/d2/f7d292d7b8aa1b1e3561d176311feb7323a177593eb74ce6901676ee6a73bc67)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.