European Union – Air transport. Article 31(4) of the Convention for the Unification of Certain Rules for International Carriage by Air should be interpreted as meaning that, in the case of damage, within the periods referred to in art 31(2) of that convention, a complaint made by a person entitled to delivery of checked baggage or cargo should be made in writing, in accordance with art 31(3) thereof, failing which no action could be brought against the carrier. The Court of Justice so held, among other things, in a preliminary ruling in the context of a dispute between Finnair Oyj, an airline company, and an insurance company, concerning the liability of that air carrier for damage resulting from the loss of items from baggage.