As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAILED TO START. NO FLAME SHUTDOWN FAULT CODE 49-41011. REPLACED APU IGNITION UNIT REF AMM 49-41-31. REPLACED APU IGNITER PLUG REF AMM 49-41-51. REPLACED APU IGNITER PLUG LEAD REF AMM 49-41-52. PERFORMED APU IGNITION UNIT, IGNITER PLUG AND IGNITER PLUG LEAD INSTALLATION TEST REF AMM 49-11-00-860-801. TEST PASSED. APU OK FOR SERVICE.