As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE FLIGHT, NR 1 ENGINE OIL PRESSURE BEGAN TO DROP. PILOT SECURED ENGINE, PROCEEDED ON TO SHORE BASE AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND OIL LEAK AT NR 6 AND NR 7 SCAVAGE STRUT. REF: ALLISON C-20 IPC, CHAPTER 72-50-00, FIGURE 1, ITEM 32.