# The Extradition (Aviation Security) Order 1991, Paragraph 2


Denunciation shall take effect six months following the date on which notification is received by the Depositary Governments.
IN WITNESS WHEREOF the undersigned Plenipotentiaries, being duly authorized thereto by their Governments, have signed this Convention.
DONE at Montreal, this twenty-third day of September, one thousand nine hundred and seventy-one, in three originals, each being drawn up in four authentic texts in the English, French, Russian and Spanish languages.

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Source: https://www.legislation.gov.uk/uksi/1991/1699/schedule/1/crossheading/16/paragraph/2 (the official version)
Page: https://openlegislation.uk/extradition-aviation-security-order-1991/schedule-1/crossheading-16/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.