As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT LOST ALL HYDRAULIC PRESSURE. BOTH LIGHTS ILLUMINATED AND GAUGE AT ZERO. EXTENDED GEAR PER EMERGENCY CHECK LIST. REPLACED THE NR ONE HYDRAULIC PUMP. PURGED AND SERVICED HYDRAULIC SYSTEMS. RAN THE LEFT AND RIGHT ENGINES. CYCLED FLAPS AND RESERVICED. LEAK CHECKED NR ONE HYDRAULIC PUMP. HYDRAULIC SYSTEM OPERATIONALLY CHECKS GOOD.