As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GROUND CREW REPORTS #1 ENGINE TAILPIPE FIRE. FIRE EXTINGUISHED PRIOR TO QRH STEP 2 MOTOR ENGINE.<[01] PERFORMED GVI OF #1 ENGINE IAW AMM 71-00-00. DUE TO OBSERVED CANDLE FIRE IN EXHAUST PLUG. A/C OK FOR SERVICE DUE TO NO DAMAGE TO FLAME ARRESTOR (SECTION F; PARA. 2). NO EVIDENCE OF EXTERNAL LEAKAGE. AND PER SWA POWERPLANT ENGINEERING; OIL CONSUMPTION LEVELS NML. A/C OK FOR SERVICE.