As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS - APU FAILED TO START UPON ARRIVAL. APU ECU BITE IAW FIM 49-11-00. NO FAULTS, NO FLAGS. TRIED APU START ATTEMPT UNSUCCESSFUL, RPM ONLY 20 PERCENT. R & R APU START ASSY. OPS CK GOOD. AMM 49-41-01. SECURED APU DOOR. APU STARTED SUCCESSFULLY. OK FOR SVC.