190. Jurisdiction over offenders.

A contracting state must take the measures necessary to establish its jurisdiction over the offence when: (1) it is committed on board an aircraft registered in that state1; (2) the aircraft lands on its territory with the alleged offender on board2; or (3) the offence is committed on board an aircraft leased without crew to a lessee who has his principal place of business or, if none, his permanent residence in that state3; and (4) the offender is present in its territory and it does not extradite4 him to one of the states mentioned in heads (1) to (3)