As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIVE OUT OF THE SIXTEEN SNAP RINGS IMPROPERLY INSTALLED IN THE COUNTER WEIGHTS. RETAINING RINGS WERE NOT INSTALLED IAW SB M93-4 AND SB 00-3A. THE CRANKSHAFT WAS DELIVERED DIRECT FROM THE FACTORY WITH THE SNAP RINGS INSTALLED INCORRECTLY.