# STC SA1674GL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Aerotek Design Labs, United States
- Description: Installation of a GTE Airfone digital public telephone system (Genstar).
- Applied: April 9, 1991
- Status date: October 20, 2006
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A1NM](https://openairdocs.org/tcds/A1NM)
- Certificate PDF: https://openairdocs.org/files/sha256/19/5c/195c4c0f429f777a705c14e9495df29e1d2a7f9c8c8fc1330fc7738ed491a03b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/07EC841D89367383862572D5004A31BA.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1674GL

## ADs that name it (0)

None.

## Approved models (2)

- The Boeing Company 767-200 Series ([TCDS A1NM](https://openairdocs.org/tcds/A1NM))
- The Boeing Company 767-300 Series ([TCDS A1NM](https://openairdocs.org/tcds/A1NM))

## 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. A1NM for complete certification basis.)

Installation of a GTE Airfone Digital Pub lic Telephone System (Gentar) installed pe r GTE Airfone STC Documentation Checklist AFD 70-0028-00, Rev. 15, dated April 26, 1999, or later FAA Approvedrevision.

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

2) FAA Approved Airplane Maintenance Manual Supplement, dated September 25, 1998, or later FAA Approved Revision is a required part of this STC.

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 A1NM Make : Boeing Model : 767-200 Series; 767-300 Series Date of application : 4/9/91

Date of issuance : 12/4/91

Date reissued : 4/4/02; 10/20/06

Date amended : 3/16/94; 9/21/94; 10/6/94;

9/29/98; 6/22/99

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

( Title)

## Every issue (1)

- October 20, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/19/5c/195c4c0f429f777a705c14e9495df29e1d2a7f9c8c8fc1330fc7738ed491a03b)

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