What was found
FLT 6394 - ROA-IAD - MADE AN SCHEDULED LANDING WITH ONE DISCREPANCY WHICH WAS BRAKES VERY SOFT, TAKES 5 SECONDS BEFORE RESPONSE. AIRCRAFT WENT TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND TAXIED AIRCRAFT. MAINTENANCE COULD NOT DUPLICATE PROBLEM ALL RESPONSES NORMAL, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)