Article 29 Montreal Convention
Article 29 of the Montreal Convention (Convention For the Unification of Certain Rules for International Carriage by Air) is titled Basis of Claims. It is under Chapter III (Liability of the Carrier and Extent of Compensation for Damage).
In the carriage of passengers, baggage and cargo, any action for damages, however founded, whether under this Convention or in contract or in tort or otherwise, can only be brought subject to the conditions and such limits of liability as are set out in this Convention without prejudice to the question as to who are the persons who have the right to bring suit and what are their respective rights. In any
such action, punitive, exemplary or any other non compensatory damages shall not be recoverable.
See also: Article 28 Montreal Convention