# STC SA946SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Associated Air Center, Inc. - c/o CT Corporation System, United States
- Description: Update Sperry 2587400-274 air data computer.
- Applied: June 4, 1968
- Status date: January 18, 2018
- Product: Aircraft, Large Airplane
- Data sheets: [TCDS A12EA](https://openairdocs.org/tcds/A12EA)
- Certificate PDF: https://openairdocs.org/files/sha256/17/26/1726c9cc88a8d8b8c863248761dd50f0fddcad1a2c67ffe4af3c9ccc8477c552
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182929918320230425155106.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA946SW

## ADs that name it (0)

None.

## Approved models (1)

- Gulfstream Aerospace Corporation G-1159 ([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 (8/13) Page 1

Part of the Federal A viation Regulations.

Original Product – Type Certificate Number: MDNH:

MRGHO:

Signature

Title

SA946SW Associated Air Center, Inc. - c/o CT Corporation System 1999 Bryan Street, Suite 900 Dallas, TX 75201 4b A12EA Grumman G-1159 Update Sperry 2587400-274 Air Data Computer to 2587400-844 in accordance with Associated Radio Company Drawing List 19036-1159, Revision A, dated 1/6/1969.

Certification Basis of this STC refers to Part 4b of the Civil Air Regulations (CAR 4b).

6/4/1968 7/15/1968 1/10/1969 1/18/2018 Jose Mora-Vargas ODA Administrator ODA-710437-SW

FAA Form 8110-2 (8/13) Page 2

To (Name and address of transferee) From (Name and address of grantor) Extent of Authority (if licensing agreement):

SA946SW

## Every issue (1)

- January 18, 2018: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/17/26/1726c9cc88a8d8b8c863248761dd50f0fddcad1a2c67ffe4af3c9ccc8477c552)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.