As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) BULGE WAS FOUND IN NR 2 CYLINDER ROCKER BOX COVER. INSPECTION REVEALED EXHAUST SIDE ROCKER PIN SUPPORT BOSS/JOURNAL BROKEN. 2 EQUAL PARTS OF THE OUTSIDE RADIUS HAD DETACHED AND WERE LODGED IN BOTTOM OF ROCKER BOX. BRASS BEARING WAS STILL ATTACHED TO PIN AND REMAINING MATERIAL. NO SIGN OF FATIGUE OR POROSITY WERE OBSERVED. CYLINDER WAS REPLACED WITH NEW KIT.