What was found
LEFT DEPARTURE AIRPORT WITH HYDRAULIC SYSTEM 1 QUANTITY AT 32 PERCENT. ABOUT 150 MILES EAST, HYDRAULIC SYSTEM 1 LOW QUANTITY. DECLARED EMERGENCY, DIVERTED, OVER AIRPORT, 12 PERCENT. LANDED WITH 6 PERCENT AND WENT TO 2 PERCENT WITH REVERSERS. LANDED WITHOUT INCIDENT. AT GATE, WITH PUMPS OFF, SHOWS 10 PERCENT. ON WALK AROUND, FOUND HYDRAULIC FLUID LEAKING FROM NR 1 ENGINE. INSPECTED AND FOUND HYDRAULIC 1 LINE DAMAGED INSIDE E1 PYLON. R & R HYDRAULIC LINE IN E1 PYLON REF MM 54-50-23/20-10-03. OPS AND LEAK CHECK GOOD. SERVICED E1 HYDRAULICS IAW MM 12-12-01.