Spirit Airlines close to agreeing major Airbus order - sources

(Reuters) - U.S. budget carrier Spirit Airlines is close to agreeing a provisional deal to order as many as 100 single-aisle aircraft worth up to $12 billion at recent catalogue prices from Airbus , industry sources said.Such a deal would be the first for the European planemaker since the United States imposed 10% tariffs on some of the planes it offers to U.S. carriers last week, as part of a long-running transatlantic trade dispute over aircraft subsidies.Airbus declined comment. Spirit,..