What was found
LEVEL 1 ALERT, HYD 2 OFF, 40 MIN INTO FLIGHT AT 370. 2.7 GAL LEFT, HYD 2 QTY LO, 1.3 GAL LEFT AFTER CONFIGURING. QRH COMPLIED WITH. LEAK WAS FOUND AT THE NR 2 HYD PRESSURE TRANSDUCER O-RING, REPLACED O-RING, MPN NAS1612-10, IPC 29-12-24-01, ITEM 060, REF MM 29-12-46-2 AND SERVICED NR 2 HYDRAULIC SYSTEM, REF MM 12-13-02-3. RAN NR 2 ENGINE, LEAK CHECKS GOOD. CLEANED AREA, ACFT OK FOR SERVICE.