What was found
ENROUTE RECEIVED LEVEL 1 HYD 3 ELEV. OFF, THEN HYD 3 OFF, LEVEL 2 HYD 3 FAIL AND QTY WENT TO 0.1. DECLARED EMERGENCY, DUMPED 77.0 LBS OF FUEL AND DIVERTED TO RJBB. T/SHOT AND FOUND #3 ENG L/H EDP CASE DRAIN RIGID LINE HAS CRACK/HOLES CAUSED BY CLAMP BROKEN. REF AIPC 29-11-15-01ITEM# 70. P/N 224-9409-529 CASE DRAIN RIGID LINE REPLACED REF. WRI 71-10/1824 R&R'ED #3 ENG L/H EDP W/ RIGID CASE DRAIN LINE PER AMM 29- 11-20-4-1. R&R'ED ALL CASE DRAIN FILTERS PER AMM 29-12-41-2.