As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT DIVERTED TO MIAMI DUE TO LOSS OF YELLOW SYSTEM HYDRAULIC FLUID. INVESTIGATION REVEALED THE LEAK WAS AT A UNION TO THE POWER TRANSFER UNIT QUICK DISCONNECT. THE PACKING HAD DETERIORATED AND WAS SUBSEQUENTLY REPLACED WITH NO FURTHER LEAKS. THE AIRCRAFT WAS THEN RELEASED FOR SERVICE. REF: NR 20-09-98. ACFT TC: 2,188.