# STC SA09300AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 20/30 single and two axis automatic flight guidance systems, model ST-752-20/30.
- Applied: November 4, 1997
- Status date: November 6, 1997
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A20CE](https://openairdocs.org/tcds/A20CE)
- Certificate PDF: https://openairdocs.org/files/sha256/9a/f8/9af842baf1ce084dafc022cd03ce41085c2e43fc9b467101b406b467efc81744
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/64DC63B31C1AB76E85256CC1007F3A76.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA09300AC-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 5A09300AC-D I his Corlifeate issued to S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 'S art 23 of the Federal A viation Regulations.

Original Product I ype Certificate Number: A20CE Make: Cessna Model: 177RG Description of Type Design Change:

Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-752-20/30, according to Bulletin No. 852, dated 11-03-97 and Master Drawing List No. 921043, dated 11-03-97 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 891582, dated 11-06-97 is required for Cessna Model 177RG for S-TEC System 20 or later FAA Approved revisions of the above supplement.

(See Continuation Sheet, Page 2, a part of this STC.)

Date of Application: 11-04-97 Date Reissued:

Date of Issuance: 11-06-97 Date Amended:

FEDERAL AVIATION POMNISTRATIO DAS Staff Coordinator, DAS 5 SW William J. Thomas (Title)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09300 AC-D Limitations and Conditions: (con't.)

2. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement P/N 891584, dated 11-06-97 is required for Cessna Model 177RG for S-TEC System 30 or later FAA Approved revisions of the above supplement.

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

FAA Form 8110-2-I (10-69) Page 2 of 2

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)

- November 6, 1997: Issued, Current. [certificate](https://openairdocs.org/files/sha256/9a/f8/9af842baf1ce084dafc022cd03ce41085c2e43fc9b467101b406b467efc81744)

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