As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE OIL PRESS LOW ANNUNCIATOR CAME ON DURING DESCENT. OIL PRESSURE GAUGE WAS FLUCTUATING BETWEEN 25 - 40 PSI. AFTER LANDING, ENGINE HAD NO OIL LEFT IN IT. ENG INSPECTED & RESERVICED WITH OIL & CHECKED CHIP DETECTOR ALL GROUND RUN NO DEFECTS, ALL GEARBOX SUMP PRESSURE CHECKS IAW 731-9R CMM ALL OK. REPAIRED ACCY GEARBOX LEAK BY REPLACING FWD 3 EA CARBON & GARLOC SEALS. REPLACED WORN HYD PUMP DRIVE GEARSHAFT IN ACCY GEARBOX IAW 731-4R M/M & GARRETT MM.