As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW RECEIVED NR 1 ENGINE OIL PRESSURE CAUTION LIGHT AND THE OIL PRESSURE WENT TO ZERO. CREW SHUT DOWN NR 1 ENGINE. FOUND OIL LEAK AT OIL PRESSURE REGULATOR DUE TO STRIPPED THREADS IN A FITTING BOSS. REPLACED OIL PRESSURE REGULATOR AND PERFORMED MAINTENANCE MANUAL PROCEDURE 05-00-00 FOR LOSS OF OIL PRESSURE.