As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 3551 - DURING TRANSIT, THE HYDRAULIC PUMP FOR LT ENGINE LEAKED. CANCELLED THE FLIGHT. SENT MAINTENANCE TO REMOVE FAULT. REPLACED THE DRIVING HYDRAULIC PUMP FOR LT ENGINE. THE REPLACED HYDRAULIC PUMP WAS SENT TO MANUFACTURER FOR REPAIR.