Folding Knives Previously Allowed on Passenger Flights

Photo of easily-concealed folding knives
Assorted folding knives that previously were allowed onboard U.S. domestic flights. All have blade lengths less than 4 inches.

From top: 12" ruler, Spyderco Cricket, Spyderco Delica, Pacific Cutlery Balisong, CRKT Crawford/Kasper.

All of the knives in the photo above were allowable onboard U.S. domestic flights until September 12, 2001. Pocketknives with blades less than 4 inches long were allowed in the passenger cabin.

On September 12, the Federal Aviation Administration banned all knives--of any blade length--from the passenger cabins of airliners.

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