For these purposes, the CAA defines a cancellation as: The number of flights cancelled is now included in the reports. Below is a list of airports at which Airport Coordination Ltd data is used to audit “planned data” reported by the airport AuthoritiesĪberdeen, Belfast City (George Best), Belfast International, Birmingham, Bournemouth, Bristol, Doncaster Sheffield, Durham Tees Valley, East Midlands International, Edinburgh, Gatwick, Glasgow, Heathrow, Jersey, Leeds Bradford, Liverpool (John Lennon), London City, Luton, Manchester, Newcastle, Southampton, Stansted.įor Cardiff and Exeter, Airport Coordination Ltd “planned data” is used and assessed in conjunction with the airports actual gate times as they do not provide planned gate times.Īirport Coordination Ltd does not coordinate slots for airlines at for the airports listed below and the “planned data” is not audited. Only obvious mismatches between the actual gate time and planned gate time have been reconciled.Īirport Coordination Ltd is responsible for allocating slots to airlines operating at many of the airports included in the punctuality reports and their data are assessed with the “planned data” provided by the airports. No account is taken of the different taxiing times associated with the terminal building used. In instances where the actual gate time is not available it has been derived from the actual runway according to the following taxi time assumptions. The actual gate time is not a mandatory field but is required to calculate punctuality. The planned times are supplied by Airport Coordination Ltd or the airport operators themselves and include changes made up to 30 minutes before operation. Actual gate time refers to the “off-block” time on departure and “on-block” time on arrival.Īctual gate times of operation are supplied by airport operators to the CAA. The measure of punctuality is derived from the difference between actual gate time and planned gate time. For information about publications prior to January 2018 please see individual publications from that period. These notes relate to publication covering the period January 2018. As a result, errors involved in calculating gate delay are minimised and the accuracy of the CAA's reported on-time data is increased. This was enabled by the introduction of AvStats which made it possible to calculate actual gate delay by collecting actual gate times from airports thereby removing the need to use estimated taxi times. The review recommended that the CAA should move from an estimated gate delay approach to calculating actual gate delay. In early 2017, we began a review of the methodology we follow to calculate delay with the view to ensuring that our punctuality metrics are accurate, reliable and present a fair picture of aviation performance. increase the granularity of existing punctuality metrics and include additional relevant metrics in the CAA's punctuality statistics reports.collect cancellation data from airports and include relevant metrics in the CAA's punctuality statistics reports, published monthly and annually.In light of this evidence and in order to ensure that punctuality reporting is useful to consumers, the CAA decided to: Regarding on-time performance, research conducted by the CAA reveals that consumers are most concerned about their flights arriving at their destinations on time. CAA consumer research demonstrates that consumers consistently rate information on flight performance as important. the outcome of the CAA's Punctuality ReviewĮvidence has recently come to light suggesting that the CAA needs to widen the scope of the data it publishes on on-time light performance and to improve its quality.recent evidence on the importance of punctuality information for consumers and.The changes in the punctuality statistics were prompted and informed by: Reasons for changes in the punctuality metrics Their assistance is gratefully acknowledged. The Civil Aviation Authority publishes punctuality statistics for the following airports: Aberdeen, Belfast City (George Best), Belfast International, Birmingham, Bournemouth, Bristol, Cardiff Wales, Doncaster Sheffield, Durham Tees Valley, East Midlands International, Edinburgh, Exeter, Gatwick, Glasgow, Heathrow, Isle of Man, Jersey, Leeds Bradford, Liverpool (John Lennon), London City, Luton, Manchester, Newcastle, Southampton, Southend and Stansted.įull and Summary Analysis is prepared with the co-operation of the airport operators and Airport Coordination Ltd.
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