What was found
ETOPS-YELLOW HD SYSTEM LOW QUANTITY. REMOVED AND REPLACED MANIFOLD CHECK VALVE O-RING IAW AMM 29-13-53-400-802-A. SERVICED YELLOW HYDRAULIC SYSTEM WITH SKYDROL PE-5 TO FULL CAPACITY IAW AMM 12-12-29-03, OPS CHECK GOOD, NO LEAKS NOTED, A/C OK FOR SVC