What was found
WHILE ENROUTE , THE NR 1 ENGINE OIL CHIP DETECTOR LIGHT ILLUMINATED. FLEW THE ACFT BACK TO BASE, MAKING A SINGLE ENGINE APPROACH AND LANDING. PERFORMED TROUBLESHOOTING AND GOT THE CAUTION LIGHT TO EXTINGUISH. AFTER THE ACFT WAS SECURED, THE CHIP DETECTOR WAS TESTED FOR PROPER OPERATION, AND A MX RUN UP WAS PERFORMED, WITH NO DEFECTS. THE ACFT WAS THEN RETURNED TO SERVICE. THIS WORK WAS PERFORMED IAW MM 79-00-00, 1-1 TABLE 1 AND MM 72-00-00.