Air travel with firearms and ammunition

Both these systems can be used together to define safe amounts of ammunition that can be carried on various modes of transport, including civilian scheduled flights.

In simple terms, each passenger may carry up to 5 kg of weapons cartridges of less than 19.1 mm caliber being either blanks or with solid projectiles, in their checked baggage.

If ignited by intense heat the cartridge will burst, but the particles will typically not travel very far, and protective firefighter clothing is generally considered sufficient to stop the fragments.

This division comprises articles and substances, which present only a small hazard in the event of ignition or initiation during transport.

The effects are largely confined to the package and no projection of fragments of appreciable size or range is to be expected.

An external fire must not cause virtually instantaneous explosion of almost the entire contents of the package.Note: Articles and substances in this division are placed in Compatibility Group S when they are so packed or designed that any hazardous effects arising from accidental functioning are confined within the package unless the package has been degraded by fire, in which case all blast or projection effects are limited to the extent that they do not significantly hinder fire-fighting or other emergency response efforts in the immediate vicinity of the package.The United Nations has categorised all forms of dangerous goods, and the categories regarding explosive materials are listed at List of UN numbers#UN 0001 to 1000.