As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT TO KBCT, ENGINE POWER WAS REDUCED TO IDLE. OIL PRESSURE ON NR 2 ENGINE DROPPED TO RED LINE. POWER INCREASED ON NR 2 ENGINE AND OIL PRESSURE INCREASED. FOUND NR 1 CARBON SEAL RUNNER RETAINER DAMAGED. REPLACED RETAINER AND CARBON SEAL WITH NEW. INSTALLED NEW OIL PUMP. PERFORMED GROUND RUN, OIL PRESSURE ADJUSTMENT, VIBE SURVEY, AND OIL SYSTEM FLUSH.