As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A PREFLIGHT CHECK, MAINTENANCE NOTED HYDRAULIC FLUID LEAKING FROM LT MAIN GEAR UPLOCK ACTUATOR AT OTBD END OF THE B-NUT. FOUND THAT THE END OF THE ACTUATOR HOUSING WAS CRACKED PERPENDICULAR TO THE THREADS FROM THE B-NUT END IN TOWARD THE MAIN BARREL OF THE ACTUATOR. TOTAL CRACK LENGTH 1.3". SUBSEQUENT INVESTIGATION OF THE RT SIDE FOUND THAT ACTUATOR CRACKED IN THE SAME LOCATION ALSO, BUT TO A LESSER EXTENT.