# STC ST00053LA-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Aerotek Design Labs, United States
- Description: Installation of a GTE airfone digital public telephone system (genstar). Responsible ACO is Los Angeles, NM-L.
- Applied: August 3, 1995
- Status date: May 17, 2007
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE)
- Certificate PDF: https://openairdocs.org/files/sha256/12/6b/126bc83f2bbfc230d3c62c73db9b6e5a91409f5d4dd0b07efc7fca72adc11f7a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3A80D3107C84A45B862572FB0068F5AD.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST00053LA-D

## ADs that name it (0)

None.

## Approved models (2)

- The Boeing Company 747-300 Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- 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.

Part 25 of the Federal Aviation Regulations. (See Type Certificate Data Sheet No. A20WE for complete certification basis.)

Installation of a Digital Public Telephone System (Gentar) installed per Elsinore LP Master Data List, Document No. 4021-2, Rev. C, dated 1 November 1996.

1) Compatibility of this design change with previously approved modifications must be determined by the installer.

2) SATCOM equipment installation per STC ST00437 ATT (For -400) or STC ST00504AT (For -300) must be incorporated previously or concurrently.

3) 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.

Aerotek Design Labs 311 Airport Road Joliet, IL 60435 A20WE Make : Boeing Model : 747-200 Series; 747-300 Series; 747-400 Series Date of application : August 3, 1995

Date of issuance : September 9, 1995

Date reissued : February 1, 1996; April 1, 1998;

January 25, 2000; April 24, 2002;

October 20, 2006; May 17, 2007

Date amended : February 1, 1996; June 12, 1996;

November 1, 1996

( Signature) Charles L. Smalley Manager, Systems & Flight Test Branch Chicago Aircraft Certification Office

( Title)

## Every issue (2)

- May 17, 2007: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/12/6b/126bc83f2bbfc230d3c62c73db9b6e5a91409f5d4dd0b07efc7fca72adc11f7a)
- October 20, 2006: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/18/cf/18cf1a5fb69b2c4b10379fced7f538fbdc4fc2c1c436639c295b45c973b03ee1)

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