What was found
PILOT REPORTED A FUEL LEAK FROM THE ENGINE DRIVEN FUEL PUMP AFTER FLIGHT. INSPECTED PUMP, REMOVED DRAIN LINE FROM BOTTOM OF PUMP, VERIFIED LEAK. PERFORMED GROUND RUN FOR OPERATIONAL LEAK CHECK, COULD NOT DUPLICATE. CONTACTED TECH SUPPORT, AND WAS ADVISED TO REPLACE THE PUMP FOR SAFETY CONCERNS. REMOVED FUEL PUMP PN 62E23190, SN AND REPLACED WITH NEW FUEL PUMP, PN 62E23190, SN HUAN090FP. PERFORMED OPERATIONAL CHECK, NO DEFECTS NOTED. VISUAL INSPECTION OF REMOVED PUMP, LUBRICATING GREASE AT DRIVE SHAFT WASHED OUT BY FUEL AND RUST STAINS FOUND. SUSPECT PUMP BYPASSING INTERNALLY WHEN HOT.