As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ARN FLT 752 EN ROUTE PHL ARN. DURING APPROACH, THE CENTER HYDRAULIC SYSTEM BEGAN TO DEPLETE. BY THE TIME THE FLIGHT LANDED, THE CENTER HYDRAULIC SYSTEM WAS AT ZERO QUANTITY. THE AIRCRAFT WAS TOWED TO THE GATE. MAINTENANCE REPLACED THE CENTER HYDRAULIC MODULE ASSEMBLY. OPERATIONAL AND LEAK CHECKS OK. (S)