As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENG 2 FUEL FILTER EICAS MESSAGE APPEARED AND DURING LT TURN INTO PARKING THERE WAS NO REPSONSE FROM ENGINE 4 WHEN POWER DEMANDED. FOUND FUEL CONTAMINATED IN ALL FUEL TANKS. CLEANING OF FUEL TANKS CURRENTLY IN PROGRESS. ALL ENGINE FUEL FILTERS AND APU FUEL FILTER REPLACED.