What was found
PHL/CVG - FLT 4010 - EN ROUTE, APPROXIMATELY 80 MILES EAST OF CVG, FLIGHT CREW WAS ALERTED BY A FUEL FILTER BYPASS CAS MESSAGE. CREW WAS ADVISED TO DIVERT TO DAY. AIRCRAFT LANDED IN DAY WITHOUT FURTHER INCIDENT. DAY MAINTENANCE INSPECTED THE RT ENGINE HP FUEL PUMP FILTER AND FOUND IT WAS CONTAMINATED. DAY MAINTENANCE REMOVED AND REPLACED HP FUEL PUMP FILTER AND FOUND IT WAS CONTAMINATED. DAY MAINTENANCE REMOVED AND REPLACED RT ENGINE HP FUEL PUMP IAW MM 73-11-03. GROUND RUNS CHECKED GOOD, AIRCRAFT RETURNED TO SERVICE. (X)