The FAA and the airlines ensure safety by adhering to calculated load limits and various weather minimums. Because of the displaced landing thresholds, the runways have shorter distances available for landings than for takeoffs. 13C/31C, the longest runway, only has an available landing distance of 6,059 feet (1,847 m) in the southeast direction, and 5,826 feet (1,776 m) to the northwest.