As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU VERIFICATION FAILED. APU FAULT AFTER START AT TOP OF DESCENT FL410. T/S PER A330 TSM 49-41-00-810-801-A. REPLACED BOTH APU LUBE AND SCAN FILTERS IAW A330 AMM 49-91-41. ALSO, REPLACED BOTH IGNITER PLUGS IAW A330 AMM 49-41-41. GROUND OPS CHECKED GOOD. RAN APU FOR 30 PLUS MINUTES AND LEAK CHECKED OK. BITE TESTED APU AND NO FAULT FOUND. ACFT OK FOR SERVICE.