Supplemental type certificate · United Technologies
- Holder
- United Technologies · United States
- Status
- Current · Amended
- Status date
- May 3, 1985
- Applied
- March 1, 1983
- Product
- Engine
- Certification basis
- Part 21
From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 5, 2025.
What it approves
Incorporation of Hamilton Standard EDM 110-3 Engine Data Multiplexer
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 · 3
| Make | Model | Data sheet |
|---|
| Pratt & Whitney Division | JT9D-7R4D1 | E3NE |
| Pratt & Whitney Division | JT9D-7R4E1 | E3NE |
| Pratt & Whitney Division | JT9D-7R4H1 | E3NE |