What was found
APU TREND DATA SHOWS CT5ATP TEMP HAS RISEN OVER THE 605 DEGREES THRESHOLD. ETOPS SIGNIFICANT SYSTEM TASK AFFECTS APU ON DEMAND IN-FLIGHT START CAPABILITY. GROUNDED - YES. PERFORMED ABU BITE TEST, NO FAULTS FOUND REF B737-900 FIM 49-40 TASK 825 STEP C. EXAMINED THE APU AIR INLET AND COMPRESSOR INLET PLENUM, NO DEFECTS NOTED. REMOVED AND REPLACED APU FUEL NOZZLES REF B737-900 AMM 49-31-14. OPS CHECK, LEAK CHECK GOOD. PERFORMED APU POWERPLANT VISUAL INSPECTION, NO DEFECTS NOTED REF AMM 49-11-00. TECH SERVCIES NOTE: REVIEW OF CT5ATP DATA SHOWS THAT TEMPS HAVE RETURNED TO NORMAL AFTER REPLACEMENT OF THE FUEL NOZZLES.