# STC ST528CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: ERDA, Inc.
- Description: Install GTE generation 1B Digital Airfone in PTC-950 seatback previously installed with GTE Analog Airfones.
- Status date: July 2, 1996
- Data sheets: A6WE
- Certificate PDF: https://openairdocs.org/files/sha256/20/fc/20fcdc80bf0bd4a75bd2e8fc0910754b6e8bf8ad3464452a6ac0ac49a366ed35
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID118735953420260910170359.0001
- Page: https://openairdocs.org/stc/ST528CH

## ADs that name it

None.

## Approved models (1)

- McDonnell Douglas Corporation MD-88 (TCDS A6WE)

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- July 2, 1996: Issued, Current. [certificate](https://openairdocs.org/files/sha256/20/fc/20fcdc80bf0bd4a75bd2e8fc0910754b6e8bf8ad3464452a6ac0ac49a366ed35)

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From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.