As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE REPLACING THE NR 4 MLG TIRE/WHEEL ASSEMBLY DUE TO TIRE WEAR, THE INNER WHEEL ASSEMBLY HUB WAS FOUND DETACHED FROM WHEEL HALF. THE NR 4 TIRE/WHEEL ASSEMBLY WAS REMOVED AND REPLACED. IN ADDITION, THE NR 3 MLG TIRE/WHEEL ASSEMBLY WAS REMOVED AND REPLACED AS A PRECAUTIONARY MEASURE.