# STC SA3997SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: American Airlines Inc, United States
- Description: Install system in passenger cabin to provide electrical power at passenger seats.
- Applied: November 5, 1997
- Status date: January 12, 1998
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A22WE](https://openairdocs.org/tcds/A22WE)
- Certificate PDF: https://openairdocs.org/files/sha256/c3/3f/c33f3f98f0d0e497762f97113b46c29482c6de47b42d9af039fe55d59d6f6c3e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D5AD6151D3E1295D85256CC2000C5C65.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3997SW-D

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company MD-11 ([TCDS A22WE](https://openairdocs.org/tcds/A22WE))

## 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 SA 3997 SW-D This certificate issued to: American Airlines, Inc.

P. O. Box 582809 MD 176 Tulsa, Oklahoma 74158-2809 Part 25 of the Federal Aviation Regulations.

Original Product - Type bestificate Numben: A22WE Make: McDonnell Douglas Model: MD-11 Description of Type Design Change:

Install system in passenger cabin to provide electrical power at passenger seats per ECO Z0883XX dated 11/10/97 and Prototype Revsion Form 7721-3 dated 1/7/98 and ECO Z0900XX dated 11/3/97 and Prototype Revsion Form 7721-3 dated 1/6//98 and ECO Z0919XX dated 12/3/97 and Prototype Revsion Form 7721-3 dated 1/5/98 and ECO Z0871XX dated 11/3/97 and Prototype Revsion Form 7721-3 dated 1/5/98 and ECO Z0895XX dated 11/3/97 and Prototype Revsion Form 7721-3 dated 1/5/98 or later DAS1SW 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: 11/5/97/ Jule rissued:

Date of Issuance: 1/12/98 Date Amended:

FEDERAL AVIATION By Direction of the Administrator E1 Tsuns TOMINISTRA DASISW 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):

Date of Transfer: _ Signature of grantor (In ink): -

## Every issue (1)

- January 12, 1998: Issued, Current. [certificate](https://openairdocs.org/files/sha256/c3/3f/c33f3f98f0d0e497762f97113b46c29482c6de47b42d9af039fe55d59d6f6c3e)

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