As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING ENGINE START-UP THE LT HYDRAULIC SYS QTY INDICATION DROPPED TO ZERO. ACFT ENGINES WHERE SHUTDOWN AND UPON INSPECTION MAINTENANCE FOUND A FLEXIBLE LINE RUPTURED AT THE RUDDER RATIO CHANGER. THE FLEXIBLE LINE WAS REPLACED AND LEAK CHECKED. ACFT WAS RELEASED TO SERVICE.