As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT INTO MEM RECEIVED ECAM YELLOW SYS PUMP LO PRESS. DETERMINED YELLOW SYS LOW QUANTITY. COMPLIED WITH ECAM/QRH. UPON INVESTIGATION OF HYDRAULIC LEAK, FOUND YELLOW SYS ISOLATION VALVE BLOCK LEAKING. FOUND O-RINGS FROM VALVE BLOCK PLUGS TORN. REPLACED O-RINGS IAW MM 27-14-21-04. LEAK CHECK GOOD. A/C OK FOR SERVICE.