What was found
CLE - FLT 1255 - THE 'A' HYDRAULIC SYSTEM WAS LOST AFTER DEPARTING LGA. THE AIRCRAFT LANDED AT CLE WITHOUT INCIDENT. MAINTENANCE FOUND PLUG BROKEN ON 'A' SYSTEM HYDRAULIC MODULE. THE 'A' SYSTEM HYDRAULIC MODULE WAS REMOVED AND REPLACED AND LEAK CHECKS WERE GOOD. IN ADDITION, BOTH THE NR 1 AND NR 2 ENGINE DRIVEN HYDRAULIC PUMPS WERE REMOVED AND REPLACED DUE TO THE 'A' HYDRAULIC SYSTEM FAILURE. (X)