The Transportation Security Administration will allow pocket knives and an array of sports equipment as carry-on items on airplanes.
The ban on these items, which have been in place since the 9/11 terror attacks, will be lifted on April 25.
Knives with blades shorter than 2.36 inches and less than half an inch wide will be permitted as long as the blade is not fixed or does not lock into place.
Two golf clubs, ski poles, hockey sticks and pool cues also will be permitted, although the ban on razor blades and box cutters remains in place, according to TSA Administrator John Pistole.
Still banned are pitchforks, swords, stun guns, ammunition and spears.
The Coalition of Flight Attendant Unions, representing 90,000 flight attendants, called the measure "a poor and short-sighted decision by the TSA."
"Continued prohibition of these items is an integral layer in making our aviation system secure and must remain in place," the union said in a statement.
TSA said the restrictions have been lifted to bring the U.S. into alignment with international standards and to permit screeners to focus on looking for higher threat-items such as bomb components and explosives.
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