# STC ST9425SC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: American Airlines Inc, United States
- Description: Install a Miltope Model TP4429 multiport printer in a Boeing 757-223 per ECO FO638XX.
- Applied: March 17, 1999
- Status date: May 3, 1999
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A2NM](https://openairdocs.org/tcds/A2NM)
- Certificate PDF: https://openairdocs.org/files/sha256/1d/0e/1d0e5ba111aa63c456e3a95ef1ba09ad6ef15b5f46f102a94a27d1a1ec7aeead
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/52B8EAC138E1DDBE85256CC3000374DE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST9425SC-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 9425 SC-D This certificate issued to: P. O. Box 582809 American Airlines, Inc.

Engineering Dept., MD 176 Tulsa, Oklahoma 74158-2809 Certifies that the change in the type design for the following product with the limitations and conditions therefon as specified hereon meets the airworthiness neguirements of Part 25 of the federal Aviation Regulations.

Original Product -Typebertificate Number: A2NM Make: Boeing Model: 757-223 Description of Type Design Change:

Install a Miltope Model TP4429 multiport printer in a Boeing 757-223 per .

ECO F0638XX dated 4/20/99 and Prototype Revision Form 7721-6 dated 5/3/99 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 writter evidence of that permission.

Date of Application: 3/17/99 Date Reissued:

Date of Issuance: . 5/3/99 Date Amended:

FEDERAL AVIATION By Direction of the Administrator - 1 Shiva E. J. Grewe (Signature) COMINIST TIOT DAS1SW 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) 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)

- May 3, 1999: Issued, Current. [certificate](https://openairdocs.org/files/sha256/1d/0e/1d0e5ba111aa63c456e3a95ef1ba09ad6ef15b5f46f102a94a27d1a1ec7aeead)

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