As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - APU FAILED TO START ON 1ST ATTEMPT, APU FAULT EICAS APU START NORMAL ON 2ND ATTEMPTS. BITE ECU AND SHOWN FAULT LOW OIL PRESS. CHANGED BOTH OIL FILTERS ON APU WHICH DPS POPPED. RESET DPS, RUN APU AND OPS CHECK GOOD. NO LEAKS OR FAULT ON ECU. NO MESSAGES.