What it approves
Addition of crankcase relief valve.
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 · 58
| Make | Model | Data sheet |
|---|---|---|
| Lycoming Engines | O-320-A1A | E-274 |
| Lycoming Engines | O-320-A1B | E-274 |
| Lycoming Engines | O-320-A2A | E-274 |