As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU DID NOT START. APU FAULT LIGHT ILLUMINATED. 2 ATTEMPTS WERE MADE WITH NO RISE EGT. ACFT GROUNDED. PERFORMED FIM 49-40, TASK 803, APU BITE SHOW FAULT HISTORY MESSAGE 49-41-012 APU NO TORTION SHUTDOWN. CYCLE APU SRT SWITCH TO ON. MESSAGE DID NOT SHOW FOR CURRENT CYCLE. PERFOMRMED NORMAL APU START IAW AMM49-11-00, NO OTHER DEFECTS NOTED. ACFT OK FOR SERVICE.