# STC SA09126AC-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 55/55X Two Axis Automatic Flight Guidance System, Model ST-608,
- Applied: October 19, 1995
- Status date: April 30, 2001
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A20CE](https://openairdocs.org/tcds/A20CE)
- Certificate PDF: https://openairdocs.org/files/sha256/30/e5/30e5ddf479fbefbadb459c3307c627f43b90469a8a3271db6df8626e115dc19a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D9B1D78CB543B8AB85256CC1007F39CB.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09126AC-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: SA09126AC-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 froduct with the limitations and conditions therefor as specited heican meek the winorthiness sequirements of Part 23 of the Frederal / viation Regulations.

C siginal I reduct I ype Certificate A unter: A20CE Make: Cessna Model: 177RG Description of Type Design Change:

Installation of S-TEC System 55/55X Two Axis Automatic Flight Guidance System, Model ST-608, according to Bulletin No. 708, Revision 2, dated 4-30-01 and Master Drawing List No. 92814, Revision B, dated 4-30-01 or later FAA Approved revisions of the above data (14 Volt System).

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

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

Date of Application: 10-19-95 Date Reissued:

Late of ismance: 10-25-95 Date Amended: 4-30-01 By Direction of the Administrator FEDERAL AVIATION (Signature) TOMINSTRATO Michael Keirnan DAS Staff Coordinator, DAS 5 SW (Title)

) FAA/DAS Approved Supplemental Flight Manual, P/N 891207, dated 10-25-95 is required for Cessna Model 177RG, S/N 177RG0787 and Below or later FAA Approved revisions of the above supplement.

2. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891208, dated 10-25-95 is required for Cessna Model 177RG, S/N 177RG0788 through S/N 177RG1266 or later FAA Approved revisions of the above supplement.

3_ FAA/DAS Approved Supplemental Flight Manual, P/N 891207, Revision 1, dated 4-30-01 is required for Cessna model 177RG, S/N 177RG0787 and below for S-TEC System 55/55X or later FAA Approved revisions of the above supplement.

4. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891208, Revision 1, dated 4-30-01 is required for Cessna model 177RG, S/N 177RG0788 through S/N 177RG1266 for S-TEC System 55/55X or later FAA Approved revisions of the above supplement.

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

FAA Form 8110-2-1 (10-69) Page 2 of 2

## Every issue (1)

- April 30, 2001: Amended, Current. [certificate](https://openairdocs.org/files/sha256/30/e5/30e5ddf479fbefbadb459c3307c627f43b90469a8a3271db6df8626e115dc19a)

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