What was found
(CAN) DURING APPROACH TO AIRPORT THE HYDRAULIC ISOLATION VALVE LIGHT ILLUMINATED. THE CREW BROKE OFF THE APPROACH TO CHECK LIGHT AND NOTED THE NR 1 HYDRAULIC CONTENTS LOW. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE PERSONNEL DISCOVERED A LEAK FROM THE NR 1 HYDRAULIC STANDBY PUMP PRESSURE TRANSDUCER. NEW TRANSDUCER INSTALLED, HYDRAULIC FLUID REPLENISHED AND LEAK CHECKED OKAY. CLOSE INSPECTION OF THE TRANSDUCER FOUND A CRACK IN THE BODY.