What was found
UPON TOUCHDOWN, TOWER OBSERVED A FIRE OUT THE AFT END OF THE AIRCRAFT. ONCE EXITING THE RUNWAY THEY STATED IT WAS OUT. THERE WERE INDICATIONS INSIDE THE COCKPIT AND ALL ENGINE PARAMETERS WERE NORMAL. THERE WERE NO SMOKE OR FUMES PRESENT. T/S PER TSM 72-00-00-810-801-A. NO FAULT OR LEAK FOUND. RAN THE ENGINES ALL PARAMETERS ARE NORMAL. FIRE DEPARTMENT DID NOT FIND ANYTHING COMING OUT FROM THE ENGINES. ACCORDING TO THE VIDEO FROM DCA AIRPORT AUTHORITY, AIRCRAFT BEACON LIGHT COMBINED WITH WATER SPRAY, MADE IT LOOKS LIKE FIRE.CONTACTED MCC. OK FOR SVC.