As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DECLARED EMERGENCY - DURING FLIGHT, A SYSTEM HYDRAULIC QUANTITY DROPPED TO 1590. NR 1 ENGINE DRIVEN HYDRAULIC PUMP LOW PRESSURE LIGHT CAME ON AS WELL AS MASTER CAUTION AND HYDRAULIC ANNUNCIATOR LIGHT. REMOVED AND REPLACED FEEL COMPUTER AND ENGINE DRIVEN HYDRAULIC PUMP PER MM.