Items and materials that may be commonplace and necessary at home or in the workplace are sometimes banned inside aircrafts because of the dangers they pose to both passengers and crew. It therefore becomes important to check with the airline which items they allow as carry-on luggage or as checked baggage, or banned altogether.
The following are the categories of items proscribed by the Transport Security Administration from being boarded in aircraft cabins:
Explosives and firearms. Matches, sparklers, other fireworks, flares, gunpowder, ammunition or other ordnance, blasting caps, dynamite, loaded firearms.
Other weapons. Knives of any kind, throwing stars, swords, or other items used in martial arts competitions. Rules in other countries will differ on transporting knives and other weapons.
Gases and pressure containers. Flammable aerosols like hair spray, spray paint or insect repellant; carbon dioxide cartridges, oxygen tanks (scuba or medical), mace, tear gas, pepper spray, self-inflating rafts, and deeply refrigerated gases such as liquid nitrogen.
Flammable liquids and solids. Gasoline, propane, butane and other fuels, lights with...