# STC SA1500SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Mode1 AK437 consisting of Century IV Autopilot with Trim and AK437/FD consisting of Century IV Autopilot/Flight Director with Trim
- Applied: August 9, 1972
- Status date: July 16, 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/c7/e7c70b09847b849a4b05d9e00422fef0bfb9de813e08000b94a81d292a322a10
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/746FC427777BA30A85256CC10082121F.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1500SW

## ADs that name it (0)

None.

## Approved models (3)

- Beechcraft Corporation V35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation V35A ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation V35B ([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.

•^ffeamn&o- ZJrta&ntd' \J0 Bepartment of ^transportation -federal aviation administration Supplemental t:uje Certificate <sKu#n#er' SA1500SW '&> Century Flight Systems, Inc.

P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 Civil Ait4f .-^^i* /2*Wt'W*wii/K*wM*w 3A15 Beech V35, V35A, V35B Installation of Mitchell Automatic Flight System Mode'1 AK437 "consisting of Century IV Autopilot with Trim and AK437/FD consisting of Century IV Autopilot/Flight Director with Trim according to Bulletin No. 559 dated 7-5-73 and Master Drawing List 87A666 dated 7-5-73.

FAA Approved Airplane Flight Manual Supplement dated August 30, 1973, is required for Century IV Autopilot; or dated August 30, 1973, for Century IV Autopilot/Flight Director installation.

modifications /& t-r <J dnf August 30, 1973, 7-16-8A, Revision 2 Don P. Watson Manager, Aircraft Certification Division Southwest Region (Title) Any alteration qf tfin certificate w punishable 6y a fine of not exceeding SI ,000, 01 imprisonment not exceeding 3 years, or both.

Thti tt'tijifate may bf transferred in accordance Luitti f-AR 21.4?.

appropriate FAA Regional Office of the transfer of this Supplemental Type Crrtificaie.

TKc FAA will reissue the certificate in the name of the transferee anil forward it lo him.

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

(Address of transferee) . (Numlter and strut) (City. Stall, and %1P todr) from (Name of grantor) (Print or type) _ (Address of grantor) (Number and ttrttt) (Cilj. Slal,. ant £1P mil) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

**C FAA AC 89-S536**

## Every issue (1)

- July 16, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/e7/c7/e7c70b09847b849a4b05d9e00422fef0bfb9de813e08000b94a81d292a322a10)

---
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.