As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAULT LIGHT ON INITIAL START AT GATE. GROUNDED - YES. C/W B737-800 FIM 49-40- TASK 803. APU DID NOT START FAULT LIGHT CAME ON. PERFORMED BIT TEST FOUND MAINTENANCE MESSAGE 49-41012, RELEASED PER MEL 49-1B. VERIFIED NO HEAT DAMAGE OR DELAMINATION ON TAIL CONE. REPLACED THE APU PER ASA T/C 78349010. LEAK AND OPS CK GOOD.