As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ENGINE WAS REMOVED DUE TO LOW OIL PRESSURE IN FLIGHT. UPON INSP IT WAS FOUND THAT THE NYLON PACKING INSIDE THE FRONT MAIN BEARING SHELLS WERE TOO SHORT. THEY DID NOT REACH THE FULL LENGTH OF THE GROOVE THAT THEY ARE SET IN. IT IS SUSPECTED THAT THIS MAY BE THE CAUSE OF THE LOW OIL PRESSURE.