As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAULT LIGHT ILLUMINATED ON ALL THREE FAILED CSS APU IN FLIGHT START ATTEMPTS AT FL360, FL360 AND FL330. ACFT GROUNDED. PERFORMED APU BITE IAW FIM 49-60, TASK 801. FAULT HISTORY LOGGED 3 MAINTENANCE MESSAGES 49-31016, OVERTEMP SHUTDOWN. COMPLETED FIM 49-30 TASK 803. NO CURRENT OR ACTIVE FAULTS, APU STARTS AND RUNS NORMALLY. REPLACED FUEL FLOW DIVIDER IAW AMM 49-31-15. INSPECTED FUEL SOLENOID VALVE CONNECTOR AND PINS, NO DEFECTS NOTED.