# STC SA7991SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Textron Aviation Inc, United States
- Description: Installation of flight management system ON/OFF switch system.
- Applied: September 10, 1990
- Status date: March 13, 2017
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A12EA](https://openairdocs.org/tcds/A12EA)
- Certificate PDF: https://openairdocs.org/files/sha256/a4/fc/a4fc75d69d95e8367a17260c0c78d25b8d2f5fb9b214429daf8d466efaab3e6e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/42D9DD54E24A4172862581630056BF19.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA7991SW

## ADs that name it (0)

None.

## Approved models (1)

- Gulfstream Aerospace Corporation G-IV ([TCDS A12EA](https://openairdocs.org/tcds/A12EA))

## 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.

FAA Form 8110-2 (5/14) Page 1 of

Part of the

Signature

Title SA7991SW Textron Aviation Inc.

One Cessna Boulevard Wichita, KS 67215 25 Federal Aviation Regulations.

Gulfstream G-IV 2 A12EA Installation of Flight Management System ON/OFF Switch System in accordance with Arkansas Aerospace Drawing List GIV-006, Revision A1 dated April 4, 1991, or later FAA approved revision.

This STC is limited to Aircraft Serial No. 1137, Registration No. N299DB. Airplane Flight Manual Supplement dated April 19, 1991, or later FAA approved revision, is required. Compatibility of this modification with previously installed equipment must be determined by installer.

March 13, 2017 September 10, 1990 April 19, 1991 Mark Fuller STC ODA administrator ODA-100129-CE

FAA Form 8110-2 (5/14) Page 2 of

To (Name and address of transferee)

From (Name and address of grantor)

## Every issue (2)

- March 13, 2017: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/a4/fc/a4fc75d69d95e8367a17260c0c78d25b8d2f5fb9b214429daf8d466efaab3e6e)
- April 19, 1991: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/86/9a/869aefb362889ce17ae43caa1dcfe489e3af83532b3cbee84f8ff0b5159142b3)

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