If the luggage delays occur at the destination, as a traveler you are usually reliant to make replacement purchases. The respective receipts should be kept well in order to prove to the airline the specific amount of damage.
Legally, the claim against the airline for damages (= amount spent on replacement purchases) follows, inter alia, from Art. 19 MÜ (Montreal Convention). Accordingly, the air carrier has to compensate for the damage caused by delays in the carriage of passengers, baggage and goods by air. However, liability for compensation is excluded if the carrier can prove that he has taken all reasonable measures to avoid damage. This would be the case, for example, if the delay occurs because of measures of the customs on which the air carrier has no influence.
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