As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLIGHT HYDRAULIC RESERVOIR LOW LEVEL APPEARED ON GREEN SYSTEM. AFTER INVESTIGATION A PIN HOLE WAS FOUND ON THE LT WING SPOILER PRESSURE TUBE. TUBE ASSY WAS REPLACED AS M/M AND SYSTEM SERVICED AIRCRAFT WAS RETURNED TO SERVICE. CAUSE OF FAILURE IS UNKNOWN . LINE WAS ROUTED TO ENGINEERING FOR ANALYSIS . SUSPECT INTERNAL EROSION