What was found
FLT 4878 - SPS-DFW - DURING CLIMB-OUT, AT ABOUT 3600 FEET, THE RIGHT ENGINE DUCT LEAK LIGHT ILLUMINATED. THE ENGINE WAS SECURED AND ABOUT 45 SECONDS LATER THE LIGHT EXTINGUISHED. THE ENGINE WAS RESTARTED AND THE LIGHT DID NOT ILLUMINATE. AIRCRAFT RETURNED TO SPS AND LANDED SAFELY. NO DUCT LEAK INDICATIONS WERE NOTED ON GROUND. MAINTENANCE REMOVED AND REPLACED RIGHT ENGINE BLEED DUCT O-RINGS AND DUCT OVERTEMP SENSORS AT INBOARD LEADING EDGE AND WING ROOT FAIRING. MAINTENANCE ALSO REMOVED AND REPLACED RIGHT ENGINE BLEED VALVE. (M)