FARMEX LTD. v. ROYAL DUTCH AIRLINES (KLM) AND ANOTHER Contract—Contract of air carriage—Breach—Liability of carrier—Air carrier failing to deliver a consignment of perishable mangoes for transit connection in Kano on agreed time—Absence of airway bill mistakenly carried to Amsterdam by carrier being cause of delay—Shipper failing to inform connecting airline staff about arriving consignment—Whether carrier blamable for delay—Connecting second air carrier refusing to accept goods for transshipment despite availability of airway bill—Whether second air carrier contributing to delay.