As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:N/A**DIVERSION** NO EMERG** AC LANDED WITHOUT INCIDENT** ABOUT AN HOUR INTO FLT NOTICED BLUE HYD QTY DECREASING. AT THE RED DOT ECAM "BLUE HYD LO QTY " MSG. C/W ECAM AND AOM PROCEDURES FOR THE LO QTY AND THE BLUE HYD LO PRESSURE.FOUND YAW DAMPER PRESSURE SWITCH PACKING LEAKING. R&R YAW DAMP PRESSURE SWITCH IAW AMM22-23-22 PB 401. LEAK CHECK GOOD. OPERATIONAL CHECK GOOD.