As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW REPORTED LOSING ALL YELLOW HYD SYS FLUID ABOUT 1 HR OUT OF FLL. AN EMERGENCY WAS NOT DECLARED AND A NORMAL LANDING WAS CARRIED OUT. MAINTENANCE CONTROL WAS ADVISED AND ARE INVESTIGATING. RESOLUTION FOUND LINE FROM PRESSURE SWITCH 3074GD LEAKING. REPLACED ASSEMBLY HOSE. ACFT SERVICEABLE.