As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SCAVENGE PUMP HOUSING WAS CRACKED ON THE 2 TOP HOLES WHERE THE SCAVENGE PUMP BOLTS UP TO THE ACCESSORY CASE ON THE BACK OF THE ENGINE. THE LOWER 2 INNER HOUSING BOLTS, NUTS, AND RETAINING LOCKWASHERS WERE OFF ON THE LEFT AND ONE-HALF OFF ON THE RIGHT. THE VIBRATION FROM THE LOOSE LOWER 2 BOLTS PUT PRESSURE ON THE 2 TOP BOLTS CAUSING THE HOUSING TO CRACK.