As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING THROUGH FL190, NR 2 ENGINE OIL PRESSURE AND QUANTITY DROPPED TO ZERO. THE ENGINE WAS SHUTDOWN AND THE FLIGHT RETURNED TO DTW WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND THE LP5 FITTING AND THREADS PULLED FROM THEIR BOSS ON THE GEARBOX. THE ENGINE WAS REPLACED WITH A SERVICEABLE UNIT.