# STC ST9422SC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: American Airlines Inc, United States
- Description: Install new Passenger seats equipped with powerports and floor proximity emergency escape path lighting in a 20 First and 113 Coach class configuration.
- Applied: September 29, 1998
- Status date: December 4, 1998
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- Certificate PDF: https://openairdocs.org/files/sha256/17/a6/17a601845a3780d6292f04199d897c69960803dcf5fb5b95cd8e7509f491634e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/25CA048F4C84A5D985256CC3000374DC.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST9422SC-D

## ADs that name it (0)

None.

## Approved models (2)

- The Boeing Company DC-9-82 (MD-82) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-83 (MD-83) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))

## 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 9422 SC-D This certificate issued to: American Airlines, Inc.

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

Original Product -Type-bentificate Numben: AGWE Маке: McDonnell Douglas Model:

DC-9-82/-83 Description of Type Design Change:

Install new Passenger seats equipped with powerports and floor proximity emergency escape path lighting in a 20 First and 113 coach class configuration in accordance with Engineering change orders ECO K2111XX dated 10/26/98 and two prototype revision forms 7721-6 dated 11/30/98 and 12/1/98, ECO K2207XX dated 10/12/98 and one prototype revision form 7721-6 dated 11/25/98 and ECO K2197XX dated 9/24/98 and one prototype revision form 7721-6 dated 11/30/98 or later DAS1SW approved revision 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: September 29,1998 Date Reissued:

Date of Issuance: December 4, 1998 Date Amended:

FEDERAL AVIATION (Signature) TAMINISTRAIO E. J. Grewe DASISW Coordinator (Title) 47 FAA FORM 8110-2 (10-68)

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 & street) (City, State, and ZIP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- December 4, 1998: Issued, Current. [certificate](https://openairdocs.org/files/sha256/17/a6/17a601845a3780d6292f04199d897c69960803dcf5fb5b95cd8e7509f491634e)

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