As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) EXCESSIVE AMOUNTS OF AN UNIDENTIFIED SEALANT WAS USED ON THE SPLIT-LINE CAUSING THE SEALANT TO SQUEEZE INTO THE ENGINE. A LOSS OF TORQUE WAS FOUND ON THE THRU-BOLTS AND CYLINDER BASE NUTS. THE OIL PICK-UP WAS CLOGGED WITH THE LOOSE SEALANT.