What was found
AT TOP OF DESCENT, WITH POWER BACK LT HYD PRESS LOW MSG ILL. LT HYD PRESS READ 0, LT HDY QTY WENT FROM 5 TO 17-C/W HYD PRESS LOW ABNORMAL. AS SOON AS AUX/TRANSFER PUMPS WERE TURNED ON. RT HYD PRESS WENT TO 0, RT HYD QTY READ 14, TURNED OFF AUX/TRANSFER PUMPS. CA-FOUND LEFT REVERSER LINE LEAKING. REPLACED SAME AND REPLACED NR 1 AND NR 2 ENG DRIVEN HYD PUMPS AND REPLACED ASSOCIATED FILTERS.