As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURNED TO DEPARTURE DUE TO A HYDRAULIC YELLOW NR 2 ENGINE PUMP LOW PRESSURE IN FLIGHT. FOUND HYD LEAK FROM YELLOW HP MANIFOLD FITTING PACKING. REPLACED PACKING IAW AMM 29-13-53-400-803A, PERFORMED A BLEED, OPS AND LEAK CHE CK OF YELLOW HYD SYSTEM IAW AMM 29-13-00. ACFT YELLOW RESERVOIR WAS NOT EMPTY UPON ARRIVAL. NO FILTER DPI WERE TRIPPED. ACFT OK FOR SERVICE.