What was found
FLT 6477 - IAD - CHS - DURING CLIMB, EXPERIENCED A FAILURE OF THE RIGHT OIL COOLER FLAP NO CLOSING. AIRCRAFT RETURNED TO IAD AND THE GATE. MAINTENANCE INSPECTED THE AIRCRAFT DISCREPANCY AND FOUND THAT A WIRE HAD BROKEN AT THE FLAP COOLER ACTUATOR. MAINTENANCE REPAIRED THE BROKEN WIRE AND PERFORMED A FUNCTIONAL CHECK OF THE SYSTEM. AIRCRAFT WAS THEN RELEASED AND RETURNED TO SERVICE. (M)