Fuelling arrangement and method

1. A method of fuelling an aircraft for a single instance of a flight from a departure point to a predetermined destination in order to minimize fuel consumption and CO 2 emissions for that single instance of a flight, wherein the method comprises:

setting an initial total quantity of fuel based on an operational flight plan two or three hours before take-off which is based upon an estimated zero fuel weight and subsequently;

determining an actual and individual weight of passengers and crew and their carry-on luggage by weighing, prior to boarding the aircraft, individual passengers and crew and their carry-on luggage intending to board the aircraft and determining therefrom an actual combined weight of passengers and crew intending to board the aircraft and their carry-on luggage;

determining the actual zero fuel weight of the aircraft when loaded from the determined actual combined weight of passengers and crew and their carry-on luggage;

calculating the fuel requirement of the loaded aircraft for that destination by fuel calculation software executed on a computer on the basis of:

operational flight plan data for that instance of the flight;

said actual zero fuel weight; and

second data relevant to fuel consumption for that instance of the flight to the predetermined destination, said second data being data liable to change after the time an operational flight plan is produced using operational flight plan data, said second data comprising one or more of taxi time to runway, taxi time at destination, holding time at destination, contingency fuel, implementation of low visibility procedures, and weather at departure point, en route and at destination, said further data being processed interactively by a member of flight crew for that instance of the flight by means of a user interface to said fuel calculation software, said user interface being provided for use on the aircraft, the calculated fuel requirement including an amount of contingency fuel, which amount of contingency fuel is re-calculated in dependence upon said further data; and

subsequently, in either order,

loading the craft, and

uplifting to the aircraft fuel to meet said fuel requirement is under the control of a member of the flight crew.

2. A method according to claim 1 , wherein the quantity of fuel remaining on arrival at the destination is calculated in dependence upon said second data.

3. A computer program product comprising a computer-readable medium incorporating program code executable by a processor to implement a method of fueling an aircraft for a single instance of a flight from a departure point to a predetermined destination in order to minimize fuel consumption and CO 2 emissions for that single instance of a flight as defined in claim 1 .