What was found
APU CT5ATP EGT TREND DATA SHOWS EGT HAS SHIFTED ABOVE THE MAINTENANCE THRESHOLD OF 593 BUT LESS THAN 605 DEGREES. ACCOMPLISHMENT OF LISTED MAINT. TASK WILL EFFECT APU ON DEMAND IN FLIGHT START CAPABILITY. CONTACT MAINTENANCE CONTROL. GROUNDED - YES. ACCOMPLISHED FIM TASK 49-40 TASK 825- HIGH CT5ATP FAULT. COMPLETED STEPS D (1) - (2). REMOVED AND REPLACED FUEL NOZZLES REF AMM 49-31-14-000-801 & AMM 49-31-14-400-801. OPS AND LEAK CHECK GOOD. FOUND NO BLOCKAGE IN APU INLET DUCT OR COMPRESSOR INLET PLENUM.