As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THREE HOURS INTO FLIGHT, JUST PRIOR TO DESCENT. ATTEMPTED 3 APU START ATTEMPTS AT FL330. THE MAJORITY OF THE FLIGHT WAS FLOWN AT FL390. NONE OF THE ATTEMPTS WERE SUCCESSFUL WITH AN APU DOOR STATUS MSG ON EICAS ABOUT A MINUTE INTO EACH ATTEMPT. NO STATUS MSG ON GROUND. FWD TO MCO/PLACARD PER MEL 49-15-01A. APU INOP. INLET DOOR SECURED CLOSED. REMOVED AND REPLACED APU DOOR ACTUATOR PER M/M. BATTERY AND CHARGER, OPS CK NML.