4 Abbreviations and definitions

Abbreviations and 166 definitions

Annual Report and Accounts 2013 | NATS Holdings Limited Business and financial review 4 Abbreviations and definitions

2012 Financial year ended 31 March 2012 IFRIC International Financial Reporting 2013 Financial year ended 31 March 2013 Interpretations Committee 3Di 3 Dimensional Inefficiency Score IFRS International Financial Reporting Standard AG The Airline Group Limited ISO International Organisation for Standardisation ANSP Air Navigation Service Provider KPA Key Performance Areas ATC Air Traffic Control KPI Key Performance Indicator ATFM Air Traffic Flow Management LIBOR London Interbank Offered Rate ATM Air Traffic Management LTIP Long-Term Incentive Plan BAT Barometric Pressure Setting Advisory Tool MoD Ministry of Defence CAA Civil Aviation Authority NATS NATS Holdings Limited and its subsidiaries, together the NATS group CAAPS Civil Aviation Authority Pension Scheme NATS NATS (Services) Limited CANSO Civil Aviation Navigation Services Organisation (Services) CDA Continuous Descent Approaches NATSNav NATSNav Limited CEO Chief Executive Officer NERL NATS (En Route) plc CP3 Control Period 3 (2011-2014) NESL NATS Employee Sharetrust Limited CPD Continuous Professional Development NHL NATS Holdings Limited CPI Consumer Prices Index OPA Operational Partnership Agreement DCIS Data Communication Integrated Services PCS Public and Commercial Services Union DfT Department for Transport PPP Public Private Partnership EC PRB Performance Review Body EFD Electronic Flight Data RAB Regulatory Asset Base EMS Environmental Management System RP1 Reference Period 1 (2012-2014) EU RP2 Reference Period 2 (2015-2019) FAA Federal Aviation Administration RPI Retail Prices Index FAB Functional Airspace Block SES FAS Future Airspace Strategy SESAR SES ATM Research HAHL Heathrow Airport Holdings Limited SJU SESAR Joint Undertaking IAS International Accounting Standard SPA Strategic Partnership Agreement IASB International Accounting Standards Board SSE Safety Significant Event IATA International Air Transport Association STATFOR Statistics and Forecast Service iFACTS Interim Future Area Control Tools Support

166 Annual Report and Accounts 2013 | NATS Holdings Limited