As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS TAILPIPE FIRE REPORTED FROM TOWER AND AIRCRAFT ON TAXIWAY. NO COCKPIT INDICATIONS. QRC/QRH COMPLIED WITH. MAINTENANCE PERFORMED INSPECTION OF NR 2 FLAME ARRESTOR IAW AMM 71-00-00, SUBTASK 2, OPS CHECK NORMAL, OK FOR SERVICE.