As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) UPON INSPECTION OF THE ENGINE DURING A SCHEDULED B-CHECK, ONE OF THE BOLTS HOLDING THE POWERCASE AND REAR ACCESSORY CASE TOGETHER WAS FOUND MIGRATING OUT OF THE POWERCASE BETWEEN CYLINDER NR4 AND NR5. ENGINE WAS REMOVED FOR REPAIR BY OVERHAUL SHOP.