As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU REPORTS SHOW A RAPID SPIKE IN CT5ATP TEMP CT5ATP TEMP IS AT OR ABOVE THE THRESHOLD 605 DEGREES. GROUNDED - YES. REPLACED APU FUEL NOZZLES. LEAK CHECK OK. REF AMM 49-31-14-400-801, FIM 49-90 TASK 825 STEP D(2). STEP D(10) ALSO COMPLETE, REFERS TO CONTINUED MONITORING FOR HIGH EGT.