# STC SA3979SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: American Airlines Inc, United States
- Description: Install an Interstate 9001 Global Positioning System (GPS) Navigation and Landing System (GNLS).
- Applied: May 7, 1994
- Status date: September 4, 1994
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A2NM](https://openairdocs.org/tcds/A2NM)
- Certificate PDF: https://openairdocs.org/files/sha256/d8/06/d80623167fd86fe6bbc2c7b44f46a67610348afa81b79f300abe9c8748d3efb7
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/59CD9B8B8136202E85256CC2000C5C34.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3979SW-D

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 757-200 Series ([TCDS A2NM](https://openairdocs.org/tcds/A2NM))

## 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.

Hmttd 3taos of America Bepartment of Transportation—federal atriation administration Supplemental t^pe Certificate SA3979SW-D American Airlines, Inc.

P. O. Box 582809, MD 208 Tulsa, Oklahoma 74158-2809 -,<^,^^a<4l^^i^,<£^^&<^w»i^ 'ij"i*^si*jMw«rn0n&,^'jL>J 25 -^^ Federal Aviation A2NM Boeing 757-200 Install an Interstate 9001 Global Positioning System (GPS) Navigation and Landing System (GNLS) in accordance with American Airlines Engineering Change Order F0316XX dated August 30,1994, and one prototype revision approval form 7721-5 dated September 4,1994, or later DAS 1SW approved revision.

•slfOMia&oml/.

This approval should not be incorporated in any aircraft of this specific model until compatibility of this modification with other previously approved modifications has been determined by the installer. GPS Landing System provisions specified by AA ECOs F0279XX dated June 17, 1993, F0279AX dated February 4,1994, and F0279BX dated February 18,1994 must be installed prior to accomplishment of the ECO listed above. Navigation may not be predicated on the use of this equipment. This is a non-interference basis certification.

•4fr^i0daA^^WsaS>fir«vaJjlAsa&/)wruivn/jM'eJji^£MMj&v*

•^^dnemvtte^ada&UdAeddw.

Mav 7 1994 February 14, 1994 Amendment 1 - 02/24/94 .Amendment 2 - 09/04/94 DAS1SW Coordinator(Title)

FAAFo«M 81 10-2 (10-68)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, Slate, and ^IP code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and <7P code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- September 4, 1994: Amended, Current. [certificate](https://openairdocs.org/files/sha256/d8/06/d80623167fd86fe6bbc2c7b44f46a67610348afa81b79f300abe9c8748d3efb7)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.