As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENROUTE AT FL330, PILOT REPORTED INDICATION OF HYDRAULIC RESERVOIR LOW LEVEL FOLLOWED BY ENGINE NR 2 PUMP LOW LEVEL AND NOTED THE YELLOW SYSTEM FLUID QUANTITY DEPLETED. MAINTENANCE INSPECTED THE NR 2 ENGINE AND FOUND THE THRUST REVERSER ISOLATION VALVE HYDRAULIC LINE CRACKED. MAINTENANCE REMOVED AND REPLACED THE NR 2 ENGINE THRUST REVERSER ISOLATION VALVE HYDRAULIC LINE AND PERFORMED OPERATIONAL AND LEAK CHECKS IAW AMM 78-37-51-400-001 AND 78-21-00-710-042.