What was found
ON DESCENT, AT APPROXIMATELY FL180, CAPTAIN REPORTED THE NR 1 ENGINE WAS NOT RESPONDING TO THRUST INPUT. ENGINE INDICATIONS WERE ABNORMALLY SLOW AND LOW. AFTER A FEW MINUTES, CREW ATTEMPTED A RESTART, BUT THE PROBLEM PERSISTED. CREW SHUTDOWN THE NR 1 ENGINE, DECLARED AN EMERGENCY AND DIVERTED TO BWI. FLIGHT LANDED WITHOUT FURTHER INCIDENT. TOTAL SINGLE ENGINE TIME WAS APPROX 25 MINUTES. MAINTENANCE REMOVED AND REPLACED THE NR 1 ENGINE MAIN ENGINE CONTROL AND FUEL PUMP, P/N 9375M82P04, AND CIT SENSOR P/N 9334M96P02. OPS CHECK, LEAK CHECK AND ENGONE RUN-UP NORMAL. (M)