As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING ROUTINE SERVICE CHECK, THE NR 4 MAIN WHEEL TIRE PRESSURE WAS FOUND TO BE 50 PSI WHEEL ASSY REPLACED AND ROUTED TO YHZ WHEEL AND BRAKE SHOP. DURING INSPECTION PROCESS, NDT INSPECTION REVEALED A CRACK EMANATING FROM THE VALVE STEM SEAT. WHEEL HALF ASSY WAS ON BUILD NR 61. WHEEL HALF SCRAPPED.