As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE CREW EXPERIENCED A LOSS OF NR 2 HYDR, INFLIGHT, AN EMERGENCY WAS DECLARED AND AN ALTERNATE GEAR EXTENSION PERFORMED. MAINTENANCE DISCOVERED THE NR 2 EDP "B-NUT" PRESSURE LINE LOOSE. DURING THE SUBSEQUENT INSPECTION, THE SUCTION LINE AND RETURN LINE WERE FOUND CHAFING WITH EACH OTHER. THE LINES, NR 2 EDP, CASE AND RETURN FILTERS WERE REPLACED AND GEAR SWINGS CARRIED OUT.