As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING RE-INSTALL OF THE HEAT EXCHANGER, AFTER CLEANING, NOTICED THAT THE FAN BLADES OF THE ACM WERE DAMAGED. A FUTHER INVESTIGATION FOUND THAT THE BLADES ALSO DAMAGED THE CASE AND THERE WAS PLAY IN SUPPORT BEARING. REF CMM 21-51-33, FIG ITEM 59.