Appendix Abbreviations, definitions and specialist terms
ABBREVIATIONS AND DEFINITIONS
AEA: Association of European Airlines
BAA: BAA plc and its subsidiary undertakings, the successors to the former
British Airports Authority
BOAC: The former British Overseas Airways Corporation
BEA: The former British European Airways Corporation
CAA: Civil Aviation Authority
IATA: International Air Transport Association
ICAO: International Civil Aviation Organization
vly Variation compared with last year
SPECIALIST TERMS
Capacity measurements
Available seat kilometres (ASKs): The number of seats made available for sale
multiplied by the distance flown.
Available tonne kilometres (ATKs): The number of tonnes of capacity available
for the carriage of revenue load (passengers
and cargo) multiplied by the distance flown.
Volume measurements
Revenue passenger kilometres (RPKs): The number of revenue passengers carried
multiplied by the distance flown.
Freight tonne kilometres (FTKs): The number of revenue tonnes of freight
carried multiplied by the distance flown.
Cargo tonne kilometres (CTKs): The number of revenue tonnes of cargo
(freight plus mail) carried multiplied by the
distance flown.
Revenue tonne kilometres (RTKs): The revenue load (passengers and cargo) in
tonnes multiplied by the distance flown.
Load factors
Passenger load factor: RPKs expressed as a percentage of ASKs.
Overall load factor: RTKs expressed as a percentage of ATKs.
Break-even load factor: The load factor required to equate total
traffic revenue with operating costs.
Yield measurements
Revenue per RPK: Passenger revenue from scheduled opera-
tions divided by scheduled RPKs.
Revenue per ASK: Passenger revenue from scheduled opera-
tions divided by scheduled ASKs.
Revenue per RTK: Revenue from total traffic divided by RTKs.
Revenue per ATK: Revenue from total traffic divided by ATKs.
Creating and implementing relationship marketing strategies 499