As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED THAT THE OIL PRESSURE ON NR 1 ENGINE DROPPED TO 50 PSI REDUCED POWER TO IDLE OIL PRESSURE CONTINUED TO DROP TO 40 PSI LOW OIL PRESSURE ANNUNCIATOR ILLUMINATED SHUT ENGINE DOWN OBSERVED OIL PRESSURE AT 20 PSI JUST PRIOR TO ENGINE SHUTDOWN. MAINTENANCE R & R PS AND GG AS AN ASSY IAW TC 1900-7100.00, REV 4. OPS CHECKED GOOD.