What was found
FLT 4831 - CRP-DFW - WHILE LEVEL AT 6,000 FEET ON DESCENT INTO DFW, RIGHT ENGINE DUCT LEAK LIGHT ILLUMINATED, FOLLOWED BY AURAL WARNING. CREW C/W DUCT LEAK EMERGENCY CHECKLIST, AND WHEN AFTER 3 MINUTES LIGHT WAS STILL ILLUMINATED, SHUT DOWN THE RT ENGINE. CREW DECLARED AN EMERGENCY AND PERFORMED A SINGLE ENGINE LANDING AT DFW SAFELY AND WITHOUT FURTHER INCIDENT. DFW MAINTENANCE FOUND RIGHT ENGINE DEICE PRESSURE REGULATING VALVE BLEED LINE CLAMP LOOSE AND SECURED CLAMP. OPERATIONAL CHECKS WERE GOOD AND THE AIRCRAFT WAS RELEASED FOR FURTHER SERVICE. (M)