# STC SA4998SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Gulfstream Aerospace Corporation, United States
- Description: Addition of in-line attenuators in supply and pressure lines to both pumps in hydraulic system No. 3 for noise reduction.
- Applied: March 21, 1983
- Status date: February 12, 1999
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A21EA](https://openairdocs.org/tcds/A21EA)
- Certificate PDF: https://openairdocs.org/files/sha256/d9/11/d911ac3944f5b148f4870116b408f44d71e5e80764bde037d88985fc5352c734
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C44BF83841B46BED86257EA0005295C4.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA4998SW

## ADs that name it (0)

None.

## Approved models (5)

- Bombardier Inc. CL-600-1A11 (CL-600) ([TCDS A21EA](https://openairdocs.org/tcds/A21EA))
- Bombardier Inc. CL-600-2A12 (CL-601) ([TCDS A21EA](https://openairdocs.org/tcds/A21EA))
- Bombardier Inc. CL-600-2B16 (CL-601-3A) ([TCDS A21EA](https://openairdocs.org/tcds/A21EA))
- Bombardier Inc. CL-600-2B16 (CL-601-3R) ([TCDS A21EA](https://openairdocs.org/tcds/A21EA))
- Bombardier Inc. CL-600-2B16 (CL-604) ([TCDS A21EA](https://openairdocs.org/tcds/A21EA))

## 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.

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•[Bepartmimt 0f 'Srattsportatton - JJfeheral ^fctatton ^Ahtnttttstratton Ol^rttftcate SA4998SW Gulf stream Aerospace Corporation, a Delaware Corporation 7440 Aviation Place Dallas, TX 75235 £na/ Jne, 25 Federal Aviation A21EA Canadair CL-600-1A11, -2A12, -2B16 Addition of in-line attenuators in supply and pressure lines to both pumps in hydraulic system No. 3 for noise reduction, in accordance with Drawing List T10-029, Rev. E, dated 8/21/91, or later FAA approved revision.

Compatibility of this modification with previously installed equipment must be determined by installer.

6t&yu*M&M/, svercdeftc eA- .-March 21, 1983 April 28, 1983 . February 12, 1999 . 9/15/83; 1/20/87;

6/27/88; 11/26/91 Rev. 4 (Signature) \ S. Fiances Cox, Manager Special Certification Office, Southwest Region (rate)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and <?/> code) from (Name of grantor) (Print or type).

(Address of grantor) (Number and street) (City, Stale, and <7f code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- February 12, 1999: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/d9/11/d911ac3944f5b148f4870116b408f44d71e5e80764bde037d88985fc5352c734)

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