As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING POST INSPECTION RUN UPS, IT WAS WITNESSED THE HYDRAULIC RESERVIOR WAS VENTING HYDRAULIC FLUID OUT OF THE VENT. NO DETERMINING FACTOR COULD BE FOUND, SO THE RESERVIOR WAS REPLACED AND NO FURTHER ISSUES WERE NOTED. (TC NR 20070629003)