As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APU START, EGT OVER TEMPED TO OVER 900 DEGREES, APU OBVIOUSLY DID NOT HAVE A SUCCESSFUL START. FIRST START ATTEMPT WAS NOT TOGGLED CORRECTLY, SECOND START ATTEMPT WAS ABORTED DUE TO REPORTED FLAME OUT EXHAUST. TROUBLE SHOT IAW FIM 49-7 0 TASK 81. CREW SHUT DOWN AT 900 DEGREES & NEVER GOT A MESSAGE 49-10650. APU OPERATED NORMALLY IAW AMM 49-11-00-860-805.