As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU TREND DATA SHOWS CT5ATP TEMP IS AT OR ABOVE THE THRESHOLD 605 DEGREES. GROUNDED - YES. REPLACED APU STARTER-GENERATOR DUE TO FAILURE OF FIM 24-21 TASK 814 STEP F(2)(E) AND (F). REMOVED/REPLACED SGU REF AMM 49-41-21. ACCOMPLISHED FIM 49-40 TASK 825 STEP D(9)(E), NO DEFECTS NOTED. ACCOMPLISHED STEP D(9)(D)(F)(H) OF FIM 49-40 TASK 825 WITH NO DISCREPANCIES NOTED. ACCOMPLISHED SGU AND FUEL NOZZLE LEAK/INSTALLATION TESTS. NO DEFECTS NOTED.