What was found
AFTER LEVEL OFF, RECEIVED A HYD 3 LEVEL OFF, CHECKED NR 3 HYD FLUID, IT WAS DECREASING RAPIDLY. SHUTOFF NR 3 PUMPS AND RMPS. FLUID KEPT DECREASING TO 0. REPAIRED WIRING INSULATION AS NEEDED IAW SWPM 20-10-01. FINSHED INSTALL OF AC 601 APU IAW WC 49T1901. OPS AND LEAK CHECK GOOD. FIRE WARNING TEST OF APU GOOD.