STC SA89GL

Supplemental type certificate · Northwest Airlines Inc.

Holder
Northwest Airlines Inc. · United States
Status
Current · Amended
Status date
June 29, 1988
Applied
April 16, 1975
Product
Aircraft · Large Airplane
Data sheet
TCDSA3WE

From FAA DRS, with our copy of the certificate PDF. DRS record last changed July 20, 2026.

What it approves

Installation of Bendix GPW-83 ground proximity warning system. (727-51C, -51, -227, -151C, -14, -251)

What the certificate says

From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.

This certificate is a scan without a text layerOpen the PDF to read it.

ADs that name this STC · 0

An AD can apply because an STC is installed, or mention one in its text.

No AD in this release names this STC

Approved models · 2

MakeModelData sheet
The Boeing Company727-100 SeriesA3WE
The Boeing Company727-200 SeriesA3WE

Every issue · 4

DRS keeps each issue of an STC as its own record, with its own certificate and attachments.

DateStatusFiles
June 29, 1988Amended, currentCertificate
July 21, 1983Amended, earlier issueCertificate
May 10, 1983Amended, earlier issueCertificate
September 29, 1975Issued, earlier issueCertificate