As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERTED, ACFT WAS GROUNDED. REPORTED A LOSS OF PRESS & FLUID QTY OF THE YELLOW HYD SYS. DECLARED AN EMERGENCY & DIVERTED WHERE THE ACFT LANDED SAFELY & TAXIED TO THE GATE UNDER ITS OWN POWER. FOUND A CHAFED HYD LINE ON THE NR 2 ENG HYD CONTROL UNIT. REPLACED THE DEFECTIVE LINE & ACCOMPLISHED A SATISFACTORY LEAK & OPS CHECKED IAW AMM 29-13-49.