As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CRANKSHAFT CONNECTING BOLT BROKE CAUSING LOSS OF ENGINE POWER. DAMAGE TO ENGINE INCLUDED REAR MAIN BEARING AND CRANKSHAFT ASSY. PROBABLE CAUSE COULD BE OVER TORQUE AT ASSY OR METAL FATIGUE. PREVIOUS OVERHAUL AGENCY UNKNOWN AT THIS TIME. (K)