# STC SA7818SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC system40/50 single and two axis aurtomatic flight guidance system Model ST-492-40/50
- Applied: June 19, 1992
- Status date: June 26, 1992
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/d4/40/d440339106690301239a51a1e516a121fabb49aadc4b6269a8623074dbb93549
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FD1DF286BAA33F2385256CC20056A4C3.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA7818SW-D

## ADs that name it (0)

None.

## Approved models (2)

- Raytheon Aircraft Company 35-C33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Raytheon Aircraft Company F33C ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## What the certificate says

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

Bad 5000 & 95 mica Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA781854-D This certificate issued to: S-TEC Corporation 946 Pegram Wolters Industrial Park Mineral Wells, Texas 76067 Port 3 of the CiVIl Air Rogulations Original Product Typo Contificato Numben: ЗА15 Маке: BEECH Model: 35-C33 and F33C Description of Type Design Change:

Installation of S-TEC System 40/50 Single and Two Axis Automatic Flight Guidance Systems, Model ST-492-40/50, according to Bulletin No. 592, dated 6-18-92 and Master Drawing List No. 92565, dated 6-18-92 and/or later FAA Approved revisions of the above data (28 Volt System).

1. FAA/DAS Approved Airplane Flight Manual Supplement, P/N 89975, dated 6-26-92 is required for Beech Models 35-C33 and F33C for S-TEC System 40 and/or later FAA Approved revisions of the above supplement.

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

Thomas DAS Staff Coordinator, DAS 5 SW (Tille)

This certificate may be transferred in excordance with FAR 21.17.

PAs Foon 8110-8 (10-68)

Panied Starzs of Suerica Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA7818SW-D Limitations and Conditions: (con't)

2. FAA/DAS Approved Airplane Flight Manual Supplement, P/N 89976, dated 6-26-92 is required for Beech Models 35-C33 and F33C for S-TEC System 50 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.

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 streel) (City, State, and ZIP code ) from (Name of grantor) (Print or type) (Address of grantor) (Number and streel) I Cil. State, and fIP code!

Signature of grantor (In ink):

## Every issue (1)

- June 26, 1992: Issued, Current. [certificate](https://openairdocs.org/files/sha256/d4/40/d440339106690301239a51a1e516a121fabb49aadc4b6269a8623074dbb93549)

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