As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI FOR TAKEOFF; REPORT OF LEFT ENGINE FLAME IN FRONT OF ENGINE SHOOTING OUT BACK OF ENGINE & AN ASSOCIATED BOOM SOUND. FLAME AND BOOM CONFIRMED BY GROUND CREW. NO EGT RISE NO ABNORMAL ENGINE PARAMETERS NOTED. ENGINE SHUT DOWN FOR TAXI TO GATE.<[01] R&R #1 ENGINE PER MT 771-00-01. TTG8Q0064QQT;[02] PER POWERPLANT ENGINEERING R&R #1 ENG PER MT 771-00-01;[03] PER POWERPLANT ENGINEERING R&R #1 ENG PER MT 771-00-01 TTG8Q0064QQT