# STC SA7197SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 40/50, Single and Two Axis Automatic Flight Guidance Systems, Model ST-325-40/50.
- Applied: June 16, 1989
- Status date: May 26, 1993
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A10](https://openairdocs.org/tcds/3A10)
- Certificate PDF: https://openairdocs.org/files/sha256/f5/3d/f53dab50cc0d813340fdc88bd23bd6941a382b6fe8a016ee2076d07b3594cfae
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C8CE71EC24286D5A86257F9D0069FACD.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA7197SW-D

## ADs that name it (0)

None.

## Approved models (4)

- Textron Aviation Inc. 310 ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310A ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310B ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310C ([TCDS 3A10](https://openairdocs.org/tcds/3A10))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

Bried Sams of Annia Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA71975W-0 This contificato, issusa lo S-TEC Corporation 946 Pegram Wolters Industrial Park Mineral Wells, Texas 76067 contifer that the change in the lyps desiger for the following produce with the limitations and conditions thomfor as specified hereon meets the airworthiness requirements of Port 3 si the CIVII Air Regulations Original Product Typo Contificato Numbon: 3A10 Make: CESSNA Model: 310, 310А, 310В, and 310С Description of Type Design Change:

installation of S-TEC System 40/50, Single and iwo Axis Automatic Flight Guidance Systems, Model ST-325-40/50, according to Bulletin No. 425, Revision 3, dated 0-18-93 and Master Drawing List No. 92494, Revision C, dated 5-18-93 or later FAR Approved revisions of the above data (28 Volt System).

' For Syre do in terent Models to, no, and 306 or late? HAA of the above supplement.

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

7-14-89 Date Amended: 5-26-93, Revision 1 FEDERAL AVIATIO By Direction of the Administrator Cuenin TOMINISTRATO DAS Staff Coordinator, DAS 5 SW William J. Thomas (Title)

47.

**FAA 7006 8110-2 (10-60)**

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA71975W-D, Revision 1 Limitations and Conditions: (con't.)

2. FAA Approved Supplemental Flight Manual, P/N 891025, dated 5-26-93 is required for System 40 in Cessna Model 310C or later FAA Approved revisions of the above supplement.

3. FAA Approved Supplemental Flight Manual, P/N 89826, dated 7-14-89 is required for System 50 in Cessna Models 310, 310A, and 310B or later FAA Approved revisions of the above supplement.

4. FAA Approved Supplemental Flight Manual, P/N 891026, dated 5-26-93 is required for System 50 in Cessna Model 310C 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.

1 (10-69) This certificate may be transferred in accordance with I'll il.t?

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) Exent of Authority (if licensing agreement) :

Signature of grantor (1n ink :

## Every issue (1)

- May 26, 1993: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f5/3d/f53dab50cc0d813340fdc88bd23bd6941a382b6fe8a016ee2076d07b3594cfae)

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