As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT THE LT STAND-BY PUMP WAS MAKING A GRINDING NOISE AFTER PARKING WITH & WITHOUT ENG RUNNING. THE LT STAND-BY PUMP WAS REPLACED WITH AN OVERHAULED UNIT 34.7 HRS TT PREVIOUSLY. THE DEFECTIVE PUMP SN 1BA3 WAS REMOVED FROM SERVICE & A INSPECTED PUMP WAS INSTALLED. FUNCTIONAL & LEAK CHECKS SATISFACTORY.