From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 6, 2025.
What it approves
Installation of Continental IO-520-E or IO-550-E engines per Colemill Enterprises, Inc. Installation Instructions for modification of Cessna 310 and Drawing AC5400, as revised March 19, 1969, or later FAA approved revision of these documents.
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.