As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6475 - IAD-SCE - DURING TAXI FLIGHT, AIRCRAFT RETURNED TO GATE DUE TO NR 1 ENGINE FLAMED OUT ON TAXI. AIRCRAFT RETURNED TO GATE AND WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED NTS VALVE, OPS CHECK OK. AIRCRAFT WAS RELEASED AND RETURNED TO SERVICE. (M)