# STC SA7776SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 65 two axis automatic flight control system, model ST-327.
- Applied: July 19, 1990
- Status date: August 2, 1990
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A10](https://openairdocs.org/tcds/3A10)
- Certificate PDF: https://openairdocs.org/files/sha256/19/3c/193c2418b5ac475d03a1367221c62bd698ab46751498ed0dd4981dd8827675aa
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1BB63C53989F884785256CC20056A47D.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA7776SW-D

## ADs that name it (0)

None.

## Approved models (1)

- The Cessna Aircraft Company 310C ([TCDS 3A10](https://openairdocs.org/tcds/3A10))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

flood £om 1 Stadia ^Department of transportation— federal atriation administration Supplemental 'Cgpe Certificate /-+ SA7776SW-D S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, TX 76067 ClVll Air 3A10 CESSNA 31 OC Installation of S-TEC System 65 Two Axis Automatic Flight Control System, Model ST-327, according to Bulletin No. 427, dated 7-18-90 and Master Drawing List No.

92520, dated 7-18-90 and/or later FAA Approved revisions of the above data (28 Volt System). ' »

1. FAA/DAS Approved Supplemental Flight Manual, P/N 89891, dated 8-02-90 is required for Cessna Model 310C and/or later FAA Approved revisions of • the above supplement.

2. Compatability of this modification with other previously approved modifications must be determined by the installer.

S&u,j£r*etum,*/'ZA*SlZc/t^rw^fmt^r~**,ms*mrwmmysi^9i^ v*f^*.r ' - " ' " Harold W. Holdeman DA'S Staff Coordinator. DAS 5 SU(Title) ; _

Thit (trliftatt may be ttaiafrrni in •ccvrJana with FAR 21.17.

Stale, and ^IT rode) Extent of Authority (if licensing agreement): _ Date of Transfer:.

Signature of grantor (In ink):

## Every issue (1)

- August 2, 1990: Issued, Current. [certificate](https://openairdocs.org/files/sha256/19/3c/193c2418b5ac475d03a1367221c62bd698ab46751498ed0dd4981dd8827675aa)

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