# STC SA09336AC-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-753
- Applied: January 28, 1998
- Status date: January 30, 1998
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A20CE](https://openairdocs.org/tcds/A20CE)
- Certificate PDF: https://openairdocs.org/files/sha256/45/53/45534765d3f2a6d4b23ebaf0a69df34ee487718ecff7feaab80eae185714d4d6
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D048A1974D0A95C085256CC1007F3A99.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA09336AC-D

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company 177RG ([TCDS A20CE](https://openairdocs.org/tcds/A20CE))

## 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: SA09336AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Certifies that the change in the type design for the following product with the limitations and conditions therefor as specifed horeon meets the armorthiress requiaments of Last 22 of the Federal A viation Regulations.

Original Product Type Certifeate Number: AZ0CE Make: Cessna 177RG Description of Type Design Change:

Installation of S-TEC System 30 ALT Altitude Hold System, Model ST-753, according to Bulletin No.

853, dated 1-26-98 and Master Drawing List No. 921069, dated 1-26-98 or later FAA Approved revisions of the above data (28 Volt System).

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891649, dated 1-30-98 is required for Cessna Model 177RG 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.

suspended, sevcked or a termination date i othermise established ky the ethministrator of the Federal d viation Administation.

Date of Application: 1-28-98 Date Reissued:

Date of Issuance: . 1-30-98 Date Amended:

By Direction of the Administrator FEDERAL AVIATION (Signature TOMINISTRATO William J. Thomas DAS Staff Coordinator, DAS 5 SW (Title) ars, or both.

mce with FAR 21.47.

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)

- January 30, 1998: Issued, Current. [certificate](https://openairdocs.org/files/sha256/45/53/45534765d3f2a6d4b23ebaf0a69df34ee487718ecff7feaab80eae185714d4d6)

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