As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT MAIN WHEEL CAME OFF ON TAKEOFF. INSPECTION REVEALED OUTSIDE BEARING FAILURE. DISINTEGRATION OF BEARING, RACE, CUP AND HOUSING ALLOWED WHEEL TO EXIT OVER AXLE NUT. SUBMITTER STATED POSSIBLE DEFECT DURING MANUFACTURE. CLOSE INSPECTION OF BEARINGS AT EACH RECOMMENDED PERIOD SUGGESTED. BEARING IS A TIMKEN, P/N 07100.