What was found
HYD 2 LOW QTY IN FLIGHT, OBSERVED SYSTEM 2 QUANTITY THEN FALLING FROM APPROX 24% TO 0% WITHIN 90 SECONDS. RAN QRH FOR HYD 2 LOW PRESSURE. DECLARED EMERGENCY, DIVERTED TO IND. LANDED WITHOUT INCIDENT. FOUND PRESSURE TUBE ASSY ON NR 2 ENGINE LEAKING. REMOVED AND REPLACED PRESSURE PIPE TUBE ASSY IAW GE MM 71-00-00-800-808 AND PERFORMED OPS AND LEAK CHECK IAW AMM 29-10-00, 29-11-00, AND GE MM 72-00-00. ALL OPS AND LEAKS CHECKS GOOD.