# STC SA5303SW-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-245 with optional automatic electric trim system.
- Applied: March 13, 1984
- Status date: October 22, 1990
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A20CE](https://openairdocs.org/tcds/A20CE)
- Certificate PDF: https://openairdocs.org/files/sha256/28/ca/28caf867d5b1b9ffd899c5f4dacfd50347c94cb44e15a39b0568f92c0402d24d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BAFD88B599B5B27785256CC200122833.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA5303SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Textron Aviation Inc. 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.

Brit Sams « A dia Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SA5303SW-D This certificate issued to: S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, TX 76067 conlifees that the change in the lyps desiger for the following product with the lionilations and conditions shorefor as specified hereon meels the airvorthiness requirements of Port 23 of the Federal Aviation Regulations Original Product Type Contificate Numbon: AZOCE Make: CESSNA Model: 177RG Description of Type Design Change:

Installation of S-TEC System 60 Two Axis Automatic Flight Guidance System, Model SI-245, with Optional Automatic Electric Trim System according to Bulletin No. 345, Revision 2, dated 10-08-90 and Master Drawing List No. 92273, Revision B, dated 10-08-90 with Optional Flight Director Steering Horizon and/or later FAA Approved revisions Limitations and Conditions:

1. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89440, dated 4-11-84 is required for Cessna Model 177RG and/or later FAA Approved revisions of the above supplement.

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

4-11-84 Date Amended:

EDERAI AVIATION By Direction of the Administrator (Signature) PANNIS RATO Harold W. Holdeman DAS Staff Coordinator, DAS 5 SW (Title)

47.

**PAA FOR 01 10-2 (10-601**

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA53035W-D, Revision 1 Limitations and Conditions: (con't.)

2. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89440-1, dated 10-22-90 is required for Cessna Model 177RG and/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.

17.

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) Extent of Authority (if licensing agreement):

Date of Transfer: - Signature of grantor (In ink):

## Every issue (1)

- October 22, 1990: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/28/ca/28caf867d5b1b9ffd899c5f4dacfd50347c94cb44e15a39b0568f92c0402d24d)

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