As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 100 HOUR INSPECTION A NOISE WAS HEARD COMING FROM STARTER ADAPTER WHILE PROP WAS BEING PULLED THRU FOR COMPRESSION CHECKS. STARTER ADAPTER WAS REMOVED AND INSPECTED. NO OBVIOUS DEFECTS WERE NOTED. ASSEMBLY (635048A1) SENT OUT FOR EVALUATION/REPAIR AND A NEW CLUTCH SPRING BEARING WAS INSTALLED.