# STC SA7814SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 40/50, single and two axis automatic flight guidance systems, model ST-432.
- Applied: May 12, 1992
- Status date: May 29, 1992
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A10](https://openairdocs.org/tcds/3A10)
- Certificate PDF: https://openairdocs.org/files/sha256/24/46/24461e5c873e36d2089c451f61244d794e4c10caf6d074246fd9f4ae4c22e572
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7BE7A55AD09703AE85256CC20056A4BF.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA7814SW-D

## ADs that name it (0)

None.

## Approved models (5)

- The Cessna Aircraft Company 310D ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- The Cessna Aircraft Company 310E (USAF U-3B) ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- The Cessna Aircraft Company 310F ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- The Cessna Aircraft Company 310G ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- The Cessna Aircraft Company 310H ([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.

Baied Sons of Arica Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA781454-0 This certificate issued to: S-TEC Corporation 946 Pegram Wolters Industrial Park Mineral Wells, Texas 76067 Certifies that the change in the type design for the following product with the limitations and conditions thorpose specifed horeon meets the siovorthiness reguinments of Pose 3 of the CIVIl Air Regulations.

Original Product -Typo Contificato Numbon: 3A10 Make: Cessna Model: 310D, 310E, 310F, 310G, and 310H Description g ype Design Change:

Installation of S-TEC System 40/50, Single and Two Axis Automatic Flight Guidance Systems, Model SI-432, according to Bulletin No. 532, dated 5-07-92 and Master Drawing List No. 92560, dated 5-07-92 and/or later FAA Approved revisions of the above data (28 Volt System).

1. Also eligible on Models 310G and 310H When Modified Per STC SA412SO (300 H.P.

Colemill Conversion).

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

5-29-92 Date Amended:

FEDERAL AVIATION By Direction of the Administrator ( Signaturé) TAMIN STRATOR William J. Thomas DAS Staff Coordinator. DAS 5 SW (Tille)

ТАл 7OR 8110-2 (10-68)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA78145W-0 Limitations and Conditions: (con't.)

2. FAA/DAS Approved Supplemental Flight Manual, P/N 89966, dated 5-29-92 is required for S-lEc System 40 tor Cessna Models 3100, 310E, 310F, 310G, anc 310H and Models 310G and 310H When Modified Per STC SA412SO 300 H.P. Colemil Conversion) and/or later FAA Approved revisions of the above supplement.

3. FAA/DAS Approved Supplemental Flight Manual, P/N 89967, dated 5-29-92 is required for S-TEC System 50 for Cessna Models 310D, 310E, 310F, 310G, and 310H and Models 310G and 310H When Modified Per STC SA412SO (300 H.P. Colemill Conversion) and/or later FAA Approved revisions of the above supplement.

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

ti PAGE 2 OF 2 PAGES

The FAA will reissuc the certificate in the name of the transferee and forward it to him.

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) trom (Name of grantor) (Print or type) (Address of grantor) (Numher and streel) (City. State, and ZIP code ) Extent of Authority (if licensing agreement):

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

## Every issue (1)

- May 29, 1992: Issued, Current. [certificate](https://openairdocs.org/files/sha256/24/46/24461e5c873e36d2089c451f61244d794e4c10caf6d074246fd9f4ae4c22e572)

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