What was found
FLT NR 0419 - CLE - THE 'A' SYSTEM HYDRAULIC QUANTITY WAS LOST WHILE IN FLIGHT. THE FLUID LOSS WAS ACCOMPANIED BY ILLUMINATION OF THE NR 1 ENGINE DRIVEN HYDRAULIC PUMP LOW PRESSURE LIGHT. THE AIRCRAFT LANED WITHOUT INCIDENT. MAINTENANCE FOUND THE LEFT MLG ACTUATOR DOWN FLEX LINE LEAKING. THE FLEX LINE WAS REMOVED AND REPLACED AND LEAK CHECK WAS GOOD. IN ADDITION, THE NR 1 ENGINE DRIVEN HYDRAULIC PUMP WAS REMOVED AND REPLACED AS A PRECAUTIONARY MEASURE. (W)