As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 OIL PRESSURE FLUCTUATING BETWEEN 40 AND 42 PSI, OIL QTY NORMAL, NO LIGHTS. ON POWER REDUCTION AT TOP OF DESCENT NR 1 OIL PRESSURE LIGHT AND FILTER BYPASS LIGHT CAME ON. ENG SHUTDOWN AS PRECAUTIONARY. OIL TEMP AND QTY STILL NORMAL.