As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAULT ON ARRIVAL(<P>PERF APU BITE PER AMM 49-61-05, IGN UNIT LRU FAULT SHOWN, FOLLOWED FIM 49-11 FT 819. REMOVED AND REPLACED IGNITION UNIT IAW AMM 49-41-03, PERFORMED MULITIPLE APU START UPS. ALL ATTEMPTS SUCCESSFUL, NO FURTHER DEFECTS NOTED</P>)