Many of the TSA's laws and regulations detail prohibited and restricted items on an aircraft. Some common prohibited items include explosives, firearms, martial arts items, tools and other sharp objects. You can carry some of these items in checked baggage.
TSA regulations for airlines specify limitations on liquids, gels and aerosols carried onto an aircraft. Passengers can only carry one clear plastic bag with 3.4 ounce containers of liquids, as of November 2010. All larger containers should be in checked baggage.
TSA works with the airline industry to create and enforce regulations determining acceptable identification needed to board a flight. All passengers must show a state or federal photo ID that matches the name on their ticket in order to board an aircraft.
