As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRECAUTIONARY INSPECTIO OF THE FUEL PUMP DRIVE SPLINE IAW MM. FUEL PUMP COUPLING INSITU INSPECTION. MAINTENANCE FOUND THE FUEL PUMP DRIVE SPLINE SEVERELY CORRODED. TH FUEL PUMP ASSY WAS REPLACED WITH A FRESH OVERHAULED UNIT AND THE AIRCRAFT RETURNED TO SERVICE. (K)