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http://www.tsa.gov/pil-sharpobjects

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In advance of the upcoming changes to TSA’s Prohibited Items List, effective April 25, 2013, the guidelines below on small knives permitted in carry-on luggage are provided to help passengers prepare for airport security procedures prior to checkpoint arrival.

TSA continues to evolve and strengthen its multi-layered approach to aviation security – through better technology, expanded data analysis capabilities and an enhanced understanding of current intelligence. The decision to permit certain items in carry-on luggage was made as part of TSA’s overall risk-based security approach and aligns TSA with International Civil Aviation Organization Standards and our European counterparts.

Small knives permitted in carry-on luggage must meet all of the following requirements:

Permitted:
Permitted symbol         The blade must be no more than 2.36 inches or 6 cm in length – from tip to where it meets the handle or hilt
Permitted symbol         The blade must be no more than ½ inch in width

Thumbnail of PowerpointNot Permitted:
Not Permitted symbol         Knives with locking or fixed blades
Not Permitted symbol         Knives with molded grips
Not Permitted symbol         Razors and box cutters

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