What it approves
Installation of Allison 250-B17C gas turbine engine, Edo Model 797-2500 amphibious floats, Hartzell Model HC-B3TF-7A/T10173F-11R or HC-B3TF-7AT10173F-11R propellers
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 · 2
An AD can apply because an STC is installed, or mention one in its text.