# STC SA09343AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 30 ALT Altitude Hold System, Model ST-774.
- Applied: February 20, 1998
- Status date: February 24, 1998
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/1f/0d/1f0d422502b6dd949fd96e34f3f70e944ac756b538155d7327ed4a208d7e2056
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D4D50F38C788C06E85256CC1007F3AA1.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09343AC-D

## ADs that name it (0)

None.

## Approved models (6)

- Beechcraft Corporation H35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation J35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation K35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation M35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation N35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation 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.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA09343AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 S at 3 of the Cird A a Regulations.

Original Product I ype Cerlifcate Number: ЗА 15 Make: Beech Al cdet : H35, J35, K35, M35, N35, and P35 Description of Type Design Change:

Installation of S-TEC System 30 ALT Altitude Hold System, Model ST-774, according to Bulletin No.

874, dated 2-18-98 and Master Drawing List No. 921077, dated 2-18-98 or later FAA Approved revisions of the above data (14 Volt System).

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891672, dated 2-24-98 is required for Beech Models H35, J35, K35, M35, N35, and P35 or later PAA Approved revisions of the above supplement.

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

If the helder agrees to permit another person to use this certificate to aller the froduct, the holder shall give the other person written evidence of that permission.

revched or a termination dute is otherese established by the ministator of the Federal L vition dministation.

Date of Application: 2-20-98 Date Reissued:

Date of Issuance: 2-24-98 Date Amended:

By diction of the A daustrator FEDERA AVIATION Ween man (Signatu TOMINISTRATO William J. Thomas DAS Staff Coordinator, DAS 5 SW (Title)

47.

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 & street) (City, State, and ZIP code) Extent of Authority (if licensing agreement) :

Signature of grantor (In ink) :

## Every issue (1)

- February 24, 1998: Issued, Current. [certificate](https://openairdocs.org/files/sha256/1f/0d/1f0d422502b6dd949fd96e34f3f70e944ac756b538155d7327ed4a208d7e2056)

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