Under the plan, knives with blades that are 2.36 inches or shorter and less than a half-inch wide will be allowed in airline cabins so long as the blade is not fixed or does not lock into place.
Under the new rules, which go into effect April 25, knives with blades that are 2.36 inches (6 centimeters) or shorter and less than a half-inch wide will be allowed in airline cabins so long as the blade is not fixed or does not lock into place.