As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON ROLL BACK PRIOR TO TAXI RT INBOARD MAIN LANDING GEAR WHEEL ASSEMBLY WAS NOTICED COMING OFF AXLE. UPON FURTHER INVESTIGATION THE NR 3 WHEEL RETAINER RING WAS FOUND MISSING AND THE AXLE NUT WAS BACKED OFF. DAMAGE WAS NOTED TO THE WHEEL AND BRAKE ASSEMBLIES, THE HUB CAP AND WHEEL SPEED TRANSDUCER, AND RT MAIN LANDING GEAR INNER CYLINDER ASSEMBLY. MAINTENANCE REMOVED AND REPLACED ALL DAMAGED PARTS.