As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF, THE OUTBOARD BEARING ON THE RT INBOARD TIRE FAILED. AFTER THE BEARING BROKE DOWN, IT LET THE WHEEL ASSEMBLY LEAVE THE AXLE WITH THE NUT AND COTTER PINS STILL INSTALLED. NO DAMAGE TO THE AXLE OR BRAKE ASSY. CAUSE OF FAILURE IS UNKNOWN. BEARINGS HAD GREASE.