Each Contracting Party shall ensure that adequate measures are effectively applied within its territory to protect the aircraft and to screen passengers, and their carry-on items and to carry out appropriate checks on crew, baggage, cargo and aircraft stores prior to and during boarding or loading.

Each Contracting Party shall ensure that effective measures are taken within its territory to protect aircraft, to screen passengers and their carry-on items, and to carry out appropriate checks on crew, cargo (including hold baggage) and aircraft stores prior to and during boarding or loading and that those measures are adjusted to meet increases in the threat.

Normally screening is made immediately after carbonisation but, as foundry coke suffers some natural deterioration during loading, transportation and unloading, it is often screened again after sea transportation.