# STC SA7128SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC system 60 two axis automatic flight guidance system Model ST-010 with Optional Automatic Electric Trim System
- Applied: November 21, 1986
- Status date: June 20, 1991
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/63/51/635108589172121c54528d3c6186be5429ba9388f3ab1c892ff73974fc63ee37
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/381BFCAD08DFD3D485256CC20056A191.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA7128SW-D

## ADs that name it (0)

None.

## Approved models (6)

- Raytheon Aircraft Company H35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Raytheon Aircraft Company J35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Raytheon Aircraft Company K35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Raytheon Aircraft Company M35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Raytheon Aircraft Company N35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Raytheon Aircraft Company P35 ([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 SA7128SW-D This certificate issued to: S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, Texas 76067 Certifies that the change in the type design for the following product with the limilations and conditions thonfor as specifed horeon meets the sirworthiness requirmonts of Port 3 sfithe CiVIl Air Ragulations Original Product -Type Contificato Number: 3A15 Make: Beech Model: H35, J35, K35, M35, N35, and P35 Description of Type Design Change:

Installation of S-TEC System 60 Two Axis Automatic Flight Guidance System, Model ST-010, with Optional Automatic Electric Trim System according to Bulletin No.

110, Revision 4, dated 10-28-86 and Master Drawing List No. 9214, Revision U, dated 10-28-86 and/or later FAA Approved revisions of the above data (14 Volt System).

FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 8911-2, dated 12-17-86 is required and/or later FAA Approved revisions of the above supplement.

2. Compatibility of this modification with other previously approved modifications must be determined by the installer.

Thomas DAS Staff Coordinator, DAS 5 SW (Title)

**FAX FORM 8110-7 (10-68)**

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and ZIP code) Exent of Authority (if licensing agreement) :

Signature of grantor (In ink) :

## Every issue (1)

- June 20, 1991: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/63/51/635108589172121c54528d3c6186be5429ba9388f3ab1c892ff73974fc63ee37)

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