As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON LANDING IN RDU IT WAS NOTED THAT THE NR 2 MAIN TIRE AND WHEEL ASSEMBLY WAS MISSING FROM THE AIRCRAFT. AXLE NUT WAS ATTACHED TO THE AXLE AND THE BRAKE ASSEMBLY WAS IN PLACE. DURING A TIRE CHANGE THE PREVIOUS NIGHT, THE SPACER HAD BEEN OMITTED DURING REINSTALLATION.