What was found
DURING CRUISE FLIGHT, THE NR 1 ENGINE START VALVE LIGHT CAME ON. NR 1 ENGINE SHUT DOWN. AIRCRAFT COMPLETED SCHEDULED FLIGHT TO DTW AND LANDED WITHOUT FURTHER EVENT. ENGINE WINDMILL INSPECTION C/W, MAIN OIL STRAINER AND MAG PLUGS CHECKED OK. STARTER, START CONTROL VALVE, START VALVE PRESSURE SWITCH AND START CONTROL PANEL WERE ALL REPLACED. ENGINE WAS GROUND RUN AND FOUND SERVICEABLE.