What was found
AIRCRAFT DEPARTED AT APPROXIMATELY 1145 LOCAL, AT APPROXIMATELY 25 MILES FROM AIRPORT, THE NR 2 ENGINE SURGED AND STARTED SPUTTERING. ELECTRIC FUEL PUMP WAS TURNED ON, BUT CONDITION REMAINED THE SAME. ENGINE WAS SHUTDOWN AND ACFT RETURNED TO DEPARTURE AND LANDED SAFELY. TAXIED TO RAMP WITHOUT INCIDENT. FOUND ENGINE FUEL PUMP ADAPTER SHAFT SHEARED. OPS CHECK OF ELECTRIC FUEL PUMP FOUND TO BE NORMAL. REPLACED ENGINE FUEL PUMP ADAPTER AND ENGINE FUEL PUMP. ENGINE RUN-UP WAS PERFORMED AND SYSTEM OPS CK GOOD.