What was found
THE OIL SUMP DRAIN PANEL (ON THE LOWER COWL) WAS INSTALLED BACKWARDS. THIS ALLOWED THE OIL DRAIN VALVE TO CONTACT THE PANEL AND DEPRESS THE VALVE. CONTACT ONLY OCCURS WHEN THE ENGINE IS RUNNING.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
THE OIL SUMP DRAIN PANEL (ON THE LOWER COWL) WAS INSTALLED BACKWARDS. THIS ALLOWED THE OIL DRAIN VALVE TO CONTACT THE PANEL AND DEPRESS THE VALVE. CONTACT ONLY OCCURS WHEN THE ENGINE IS RUNNING.