Article 6

The aircraft commander may, when he has reasonable grounds to believe that a person has committed, or is about to commit, on board the aircraft, an offence or act contemplated in Article 1, paragraph 1, impose upon such person reasonable measures including restraint which are necessary:

The aircraft commander may require or authorize the assistance of other crew members and may request or authorize, but not require, the assistance of in-flight security officers or passengers to restrain any person whom he is entitled to restrain. Any crew member or passenger may also take reasonable preventive measures without such authorization when he has reasonable grounds to believe that such action is immediately necessary to protect the safety of the aircraft, or of persons or property therein.

An in-flight security officer deployed pursuant to a bilateral or multilateral agreement or arrangement between the relevant Contracting States may take reasonable preventive measures without such authorization when he has reasonable grounds to believe that such action is immediately necessary to protect the safety of the aircraft or persons therein from an act of unlawful interference, and, if the agreement or arrangement so allows, from the commission of serious offences.

Nothing in this Convention shall be deemed to create an obligation for a Contracting State to establish an in-flight security officer programme or to agree to a bilateral or multilateral agreement or arrangement authorizing foreign in-flight security officers to operate in its territory.