What was found
HYDRAULIC LEAK IN LEFT ENGINE REVERSER TUBE, DURING TRANSIT CHECK, A HYDRAULIC LEAK WAS DETECTED IN LEFT ENGINE REVERSER. MAINTENANCE PERSONNEL PERFORMED REVISION IN LEFT ENGINE REVERSER, DETECTING HYDRAULIC LEAK IN LEFT ENGINE REVERSER TUBE; SO THE LEFT ENGINE REVERSER TUBE P/N 652Z7193-1028, S/S, TSN 22307, CSN 2497, MANUFACTURER CFM INTERNATIONAL, INC WAS REPLACED IAW DMC-B787-A-78-31-00-020-941A-D, TESTED CORRECT.