As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRIOR TO TAKEOFF, ELECTRICAL PUMP OVERHEAT LIGHT ILLUMINATED, FOLLOWED BY A LOSS OF ALL LEFT HYD QUANTITY. MAINTENANCE INSPECTION FOUND FLUID LEAKING OUT OF PUMP SPLINE DRAIN. THE FLUID LEAKED INTO ELECTRICAL PORTION OF PUMP AND NOTICED ARCING AND A BURNING SMELL. PUMP WAS REPLACED, OPERATION NORMAL.