As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAILED TO START. FAULT LIGHT ILLUM AND EICAS MSG. APU FAULT DISPLAYED. SECOND ATTEMPT INDICATES (SLOW ACCEL, HUNG START). CREW COMMENTS: APU HUNG AT 44 PERCENT ON 3 ATTEMPTS APU INOP. RESET APU CONTROL AND START BREAKERS. STARTED APU SEVERAL TIMES, NO PROBLEMS.