As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE SHUTDOWN. NR 1 ENGINE FLAMED OUT UNCOMMANDED AFTER BEING STARTED FOR TAXI. RETURN TO GATE. CODES ON ESU NR 1 & 8 FADAM, CAUSE OF UNCOMMANDED SHUTDOWN TO BE HMU. REMOVED AND REPLACED HMU IWA AMM 73-20-01 401. PERFORMED OPS CHECKS IAW 71-00-00 & 72-00-00, ALL CHECKS GOOD. P/N ON/OFF 2-193-330-10, S/N ON 00AGU856; OFF 96AGU503C. A/C OKAY FOR CONTINUED SERVICE.