What was found
HYD 3 FAIL ON DESCENT. EMERGENCY DECLARED. SYSTEM 3 FOUND EMPTY AT COCKPIT INDICATION AT BLOCK IN. OPENED #3 ENGINE FOR POSSIBLE LEAKS AND WHILE DRY MOTORING PER JRH CHAPTER 5 SAW LARGE AMOUNT OF HYDRAULIC FLUID EXITING THE RIGHT FLUID DISCONNECT PANEL SCUPPER DRAIN. INSPECTED PANEL AND FOUND PUMP CASE DRAIN LINE FINGER TIGHT AND WET, TIGHTENED CASE DRAIN LINE PER AMM 20-40-01-2-0 AND DRY MOTORED AGAIN, LEAK STOPPED AND HYDRAULIC QUANTITY DID NOT DECREASE AS IT DID THE FIRST DRY MOTOR.