As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CRANKSHAFT - REGROUND 18 HOURS EARLIER. AT OVERHAUL, BROKE AT REAR THROW WITH LOSS OF POWER. GRINDING MAY HAVE BEEN THE WORK OF AN AUTOSHOP WITH NO INTEREST IN FILLET RADIUS. ENGINE RAN SMOOTH UNTIL THEN. SECOND REPORTED BROKEN CRANKSHAFT OF SAME TYPE.