# STC SA1865SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system Model AK448 or AK448FD consisting of Century IV autopilot or Century IV flight director autopilot with command/automatic electronic pitch trim.
- Applied: March 22, 1974
- Status date: August 1, 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/e7/6e/e76ecccd501521313cda714cd0120302320be899372a8f6e7e3f154a929553f4
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FBC211BD4E3944CF85256CC10083D1DA.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1865SW

## 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

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

,j*lf.gti4a&&rtA:

©tpartment of ^transportation federal aoiation administration Supplemental 'Cgpe Certificate SA1865SW Century Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 ^^4^^<&e*i>ia^fif<>(du^ 3 jjtj&e. Civil Air 3A15 Beech F33A, 36, A36 Installation of Mitchell Automatic Flight System Model AK448 or AK448FD consisting of Century IV Autopilot or Century IV Flight Director Autopilot with Command /Automatic Electronic Pitch Trim according to Bulletin No. 571, Revision 6, dated • 10-17-75 and Master Drawing List No. 87A707, Revision E, dated 10-17-75.

Beech Model F33A is limited to S/N CE-316 and Up for this modification. The following FAA Approved Airplane Flight Manual Supplements are required:

1. P/N 68S165, dated 4-10-74 for Beech Models F33A, S/N CE-316 and Up.

2. P/N 68S166, dated 4-10-74 for Beech Models 36 and A36 March 22, 1974 April 10, 1974 modifications .

8-14-75; 12-2-75; 8-1-84, Revision 3 A, Don P. Watson A Manager, Aircraft Certification Division Southwest Region :

(TilU) alteration of this certificate it punishable by a fine of not exceeding tl ,000, or imprisonment not exceeding 3 yean, or This certificate may In Irani/erred in actoidantt u/ith ^AK 21 .17.

PAAFou. II 10-1(10-41)

INSTRUCTIONS. The transfer endorsement below may he used LO notify ihc appropriate FAA Regional Office of [he transfer of ihij Supplemental Type Ccnificaic.

The FAA will reissue ihr cemficate in the name of the transferee and forward it la him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street} (Cily, Slau, a:

from (Name of grantor) (Print or tyf>e) (Address of grantor) vmbf and Itttrtj I City, Slau, and %IP odr) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):.

**C FAA AC B9-S536**

## Every issue (1)

- August 1, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/e7/6e/e76ecccd501521313cda714cd0120302320be899372a8f6e7e3f154a929553f4)

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