As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE SHUT DOWN DUE TO LOW OIL PRESSURE PROBLEM. FOUND FAILURE OF THE OIL PUMP IDLER GEAR BEARING SET DUE TO VIBRATIONS AND WEAR OF THE BEARING SET, THE BEARINGS FAIL AND STOP THE DRIVE TO THE OIL PUMP, CAUSING THE OIL PRESSURE TO DROP. THE BEARING SET IS AN OLD CONFIGURATION AND COA G-9621-0 WILL UPGRADE THE CONFIGURATION TO THE IMPROVED DESIGN.