What was found
THE A320 NR 1 BRAKE WAS REMOVED AS WORN TO LIMITS. THERE WERE NO OPERATIONAL PROBLEMS OR UNUSUAL INDICATIONS LEADING UP TO THE REMOVAL. WHILE ATTEMPTING TO REMOVE THE NR 1 MAIN WHEEL TO FACILITATE REMOVAL OF THE BRAKE, IT WOULD NOT COME OFF AS THE BRAKE WAS JAMMED INTO THE WHEEL. THE WHEEL AND BRAKE WERE REMOVED AS ONE PIECE. BRAKE ROTOR DRIVE BLOCKS WERE DISCOVERED TO HAVE SEPARATED FROM THE ROTOR CAUSING THE WHEEL AND BRAKE TO BE JAMMED AGAINST EACH OTHER.