What was found
(CAN) WHEN GROUND TESTING ENGINES FOR UNSCHEDULED PROPELLERS DYNAMIC BALANCE, RT ENGINE FLEXIBLE HOSE ASSY OF P3 BLEED AIR HAS CRACKED AT FLANGE AND SEPARATED FROM ENGINE CASE CAUSING ABNORMAL EGT VALUES, ENGINE LOSS OF POWER, PRESSURIZATION SYSTEM FAILURE, ONLY FROM RT ENGINE SUPPLY AND ENGINE INLET ANTI-ICE FAILURE. THE FLEXIBLE HOSE ASSY BECAME LOOSE AND CHAFED ON RT ENGINE FIRE EXTINGUISHER SPRAY PIPE CAUSING ITS FAILURE. HOT AIR COMING FROM BROKEN HOSE ASSY BURNED ELECTRICAL WIRES CAUSING FAILURE OF RT ENGINE SRL COMPUTER, EGT INDICATION FLUCTUATION AND ENGINE COWLING SEALS OF ZONE 1 TO MELT.