As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING ROUTINE MX, AN OIL LEAK WAS NOTICED AROUND THE NR 2 CYLINDER. FURTHER INVESTIGATION SHOWED A CRACK RUNNING FROM THE AREA OF THE CYLINDER BASE OUTWARDS AND DOWNWARDS ALONG THE FACE OF THE CYLINDER BASE MOUNTING AREA THERE ALSO APPEARS TO BE A MACHINING MARK RUNNING IN THE SAME AREA.