As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REMOVED NR 1 WHEEL FOR TIRE CHANGE. WHILE INSPECTING BRAKE ASSY, NOTICED ALL THE KEYWAY SLOTS ON THE OUTBOARD ROTOR WERE COMPLETELY MISSING. SOME DAMAGE HAD OCCURRED TO THE WHEEL WHEN THE PIECES WERE EXITING. BRAKE AND WHEEL ASSYS WERE REPLACED. (X)