What was found
UPON SLAT EXTENSION, THE SLAT DISAGREEMENT ANNUNCIATOR LIGHT ILLUMINATED AND THE AIRCRAFT ROLLED. COMPLIED WITH COM PROCEDURES AND THE AIRCRAFT LANDED IN MSP WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND THE RIGHT -T- DUCT OUTER TOP FORWARD POSITION DAMAGED FROM CONTACT WITH DOOR. ALSO, THE DOOR BUNGEE SPRING WAS BROKEN AND A LARGE WASHER WAS LOOSE. REPLACED THE DAMAGED PARTS. LEAK AND OPERATIONAL CHECK OK. AIRCRAFT RETURNED TO SERVICE.