What was found
GREEN HYDRAULIC RESERVOIR LOW ECAM FOLLOWED, THEN WITH LGCIU FAULT NR 1 HIGH LIGHTED NORMAL LANDING, THRUST REVERSERS AND NOSE WHEEL STEERING INDICATIONS AFTER TOUCH DOWN. REMOVED AND REPLACED O RING AT GREEN SYSTEM PRESSURE SWITCH (P/N 1151GN), OPS CK AND LEAK CK GOOD IAW AIRBUS MM 29-32-401.