As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS - FLIGHT CREW REPORTS APU AUTO SHUTDOWN- APU FAULT. 3 UNSUCCESFUL ATTEMPS. APU SHUTDOWN REPORTS FAULTING IGN PLUG (59KA31)/ IGN EXCITER (59KA10). NO FLAME. TROUBLESHOOTING FOUND NO AUDIBLE IGNITION. 08/16/2024 19846. REMOVED AND REPLACED APU IGNITIER PLUGS A & B AND APU EXCITER. REF AMM 49-41-41 AND 49-41-38. OPS CHECK GOOD. NO FAULTS NOTED. OK FOR SVC.