As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE FLIGHT 3237 THE CREW REPORTED NR 2 ENGINE OIL LEVEL AND PRESSURE WAS DROPPING. THE NR 2 ENGINE WAS SHUT DOWN AND THE AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE SHAFT O-RING ON THE NR 4 GENERATOR. OPERATIONAL CHECKS WERE GOOD. THE AIRCRAFT WAS RELEASED FOR SERVICE.