What was found
DFW - FLIGHT 2536, THE CREW REPORTED AN ENGINE TWO FIRE INDICATION ON TAKEOFF. THE CREW SHUTDOWN THE NUMBER TWO ENGINE AS A PRECAUTION, AND RETURNED TO DFW WHERE THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT, AND FOUND A BLOWN -Y- DUCT ON THE NUMBER TWO ENGINE. MAINTENANCE REMOVED AND REPLACED THE AFFECTED DUCT, OPERATIONAL AND LEAK CHECKED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.