# STC SA3938SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: American Airlines Inc, United States
- Description: Revise the existing TWA interior configuration from 21 first class, 52 business class, 364 tourist class to a new seating configuration of 29 first class, 78 business class, and 78 tourist class
- Applied: December 29, 1986
- Status date: November 16, 1987
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE)
- Certificate PDF: https://openairdocs.org/files/sha256/3b/bc/3bbc343681d5814c60e4f1ae69a18146ee802c826e909fc051398d21f1ad4359
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/07BB5714D9DE582A85256CC2000C5BCC.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3938SW-D

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 747SP Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))

## What the certificate says

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

103 6 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number 5439385W-D This certificate issued to: American Airlines, Inc.

P.O. Box 582809 Engineering Department, MD 208 Tulsa, OK 74158-2809 Part 25 ofthe Federal Aviation Regulations.

Original Product -Type Berlificate Number: A2OWE Make: Boeing Model: 747SP-31 Description of Type Design Change:

Revise the existing TWA interior configuration from 21 First Class, 52 Business Class, 364 Tourist Class to new seating configuration of 29 First Class, 78 Business Class and 78 Tourist Class per ECO Y3025 dated 1/2/87, ·3025A dated 2/6/87 and Y3025B dated 9/28/87.

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

Date of Application: December 29, 1986 Date Reissued:

Date of Issuance: . April 9, 1987 Date Amended: November 16, 1987 Amendment 1 FEDERAL AVIATION By Direction of the Administrator (Signature ) POMINISTRATO A. P. Voeller DAS-1SW Coordinator (Title)

47.

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 )

• from (Name of grantor) (Print or type) - (Address of grantor) (Number and street) (City, State, and ZIP code ) Extent of Authority (if licensing agreement):

Signature of grantor (In ink): _

## Every issue (1)

- November 16, 1987: Amended, Current. [certificate](https://openairdocs.org/files/sha256/3b/bc/3bbc343681d5814c60e4f1ae69a18146ee802c826e909fc051398d21f1ad4359)

---
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.