| http://www.w3.org/ns/prov#value | - However, the drop in performance for scheduled flights is a warning sign - more can be done, and we urge airports, airlines and air traffic control to work together to reverse this trend, reduce delays and ensure even more passengers reach their destination on time.???Scheduled FlightsOn-time performance (defined as early to 15 minutes late) for scheduled flights at London airports fell by four pe
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