# STC ST00334LA

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Teledyne Controls, United States
- Description: Installation of the Aircraft Communications, Addressing and Reporting System (ACARS)
- Applied: July 19, 1996
- Status date: October 4, 2012
- Product: Aircraft, Large Airplane
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE)
- Certificate PDF: https://openairdocs.org/files/sha256/bb/73/bb73bed065b100bd2c9f76cdc7f87e1aab1150947949b5fccc389d0a341457af
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E2615F53DF445EA586257AA90046D1BD.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST00334LA

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 747-400 Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

This Certificate issued to Teledyne Controls 501 Continental Boulevard El Segundo, CA 90245 Part 25* of the Federal Aviation Regulations.

*for certification basis see TCDS A20WE Original Product Type Certificate Number :

A20WE Boeing

747-400 Series Description of Type Design Change: Installation of the Aircraft Communications, Addressing and Reporting System (ACARS) in accordance with FAA Approved Teledyne Controls’ Master Data List No. MDL 2231500-14C, Revision IR, dated November 14, 1996, or later FAA approved revisions. Teledyne Controls’ FAA Approved Airplane Flight Manual Report No. TDY-ACARS-747-ANA-1, dated December 30, 1996, or later FAA approved revisions is required as part of this installation.

Limitations and Conditions: The approval of this change in type design applies basically to the abovenoted airplane model series only. This installation s hould not be incorporated in any aircraft unless it is determined that the interrelationship between this in stallation and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft. 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.

This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration.

Date of application: July 19, 1996

Date of issuance: December 30, 1996

Date reissued: April 18, 1977, October 4, 2012

( Signature) Haifa Haj-Eid Supervisor, Technical and Administrative Support Staff Los Angeles Aircraft Certification Office ( Title)

NOTE:

**DO NOT DELETE THIS PAGE.**

**DO NOT ADD ANY DATA TO THIS PAGE.**

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## Every issue (1)

- October 4, 2012: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/bb/73/bb73bed065b100bd2c9f76cdc7f87e1aab1150947949b5fccc389d0a341457af)

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