As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING THE NR 1 AND NR 2 WHEEL AND TIRE CHANGE. UPON REMOVING THE WHEEL ASSEMBLIES FROM THE ACFT FOUND NR 1 AND NR 2 BRAKE ASSEMBLY CARBON ROTOR ASSEMBLIES TO BE CRACKED AND BROKEN OFF FROM THE KEY WAY GUIDES IN SEVERAL PLACES. R & R NR 1 AND NR 2 BRAKE ASSEMBLIES.