As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 2173 LGA-DCA- HYDRAULIC SYSTEM FAILURE - INBOUND TO DCA, THE YELLOW HYDRAULIC SYSTEM FAILED. CREW RECEIVED "HYD Y SYS RES LO LEVEL" AND LOW PRESSURE ECAM WARNINGS. NO EMERGENCY WAS DECLARED AND THE ACFT LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE NR2 ENG PRESSURE TRANSDUCER LINE. LEAK CHECK WAS GOOD. (S)