Supplemental type certificate · Northwest Airlines Inc.
- Holder
- Northwest Airlines Inc. · United States
- Status
- Current · Issued
- Status date
- December 8, 1960
- Applied
- October 4, 1960
- Product
- Aircraft · Large Airplane
From FAA DRS, with our copy of the certificate PDF. DRS record last changed July 15, 2026.
What it approves
Waste-King 5424-200 Flight Recorder Systems
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
| Make | Model | Data sheet |
|---|
| Lockheed Aircraft Corporation | 188A | 4A22 |
| Lockheed Aircraft Corporation | 188C | 4A22 |