As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER SCHEDULED OUT OF PHASE OIL AND FILTER CHANGE GROUND RUN. NOTICED LT ENGINE PROPELLER HARD TO MOVE AND NO FORE AND AFT PLAY IN CRANKSHAFT. ENGINE REMOVED AND SENT FOR REPAIR. ENGINE SHOP REPORTED THAT BOTH HALF OF MIDDLE CRANKSHAFT BEARING CORNERS WERE FOUND BROKEN.