# STC ST9438SC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: American Airlines Inc, United States
- Description: Rearrangement of interior seat layout.
- Applied: December 28, 1999
- Status date: March 17, 2000
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A2NM](https://openairdocs.org/tcds/A2NM)
- Certificate PDF: https://openairdocs.org/files/sha256/fa/bf/fabf9ceae270be9a87088ea6a6b5706d1615192fc8725f63d8d04c0432a72fc0
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F46FBC7BEB148A1C85256CC3000374E5.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST9438SC-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

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number ST 9438 SC-D This certificate issued to: American Airlines, Inc. P. O. Box 582809 Engineering Dept., MD 176 Tulsa, Oklahoma 74158-2809 Part 25 of the ederal A viation Regulations.

Original Product -Type bertificato Number: A2NM Маке: Boeing Model: 757-223 Description of Type Design Change:

Rearrangement of the interior seat layout in accordance with American Airlines Engineering Change Order (ECO) F0676XX dated 1/15/00 and Prototype Revision Form 7721-6 dated 3/17/00 and ECO F0700XX dated 1/15/00 and Prototype Revision Form 7721-6 dated 3/17/00 and ECO F0703XX dated 1/15/00 and Prototype Revision Form 7721-6 dated 3/17/00 and ECO F0704XX dated 1/15/00 and Prototype Revision Form 7721-6 dated 3/17/00 or later DASISW approved revisions of each.

This approval should not be incorporated in any aircraft of this specific model until compatibility of this modification with previously approved modifications has been determined by the installer.

If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date of Application: 12/28/99 Date Reissued:

Date of Issuance: 3/17/00 Date Amended:

FEDERAL AVIATIO C. E. Williams Signature ) OMINISTA DASISW Coordinator (Title)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP code) fron (Name of grantor) (Print or type) (Address of grantor) (Number & street) (City, State, and ZIP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- March 17, 2000: Issued, Current. [certificate](https://openairdocs.org/files/sha256/fa/bf/fabf9ceae270be9a87088ea6a6b5706d1615192fc8725f63d8d04c0432a72fc0)

---
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.