As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DECLARED EMERGENCY. ENGINE DRIVEN HYDRAULIC A-PUMP LOW PRESSURE LIGHT ILLUMINATED. AFTER 10 MINUTES A-SYSTEM HYDRAULIC QUANTITY DROPPED TO 20 PERCENT. A ELECTRIC TURNED OFF UNTIL LANDING. REMOVED AND REPLACED NR 1 ENGINE DRIVEN HYDRAULIC PUMP PER MM.