Hi,
The amount of cargo is fixed by the MZFW so the T2 will never carry any cargo now, unless for some reason our passenger figures dropped due to a drop in VA rep. Nigel's flight is a good example of how 'fuel tankering' can benefit the pilot as well as the VA:-
Actual figures
fuel on a/c EGCC......... = 2466kgs
bought fuel EGCC........ = 13911kgs
dep fuel ...................... = 16377kgs
fuel burn EGCC-LEBL.... = 8958kgs
fuel on arr ..... .............= 7419kgs
bought fuel LEBL .......... = 4550kgs
dep fuel LEBL .............. = 11969kgs
fuel burn LEBL-EGCC.... = 7791kgs
fuel remaining on a/c.... = 4178kgs
4178kgs is a reasonable amount to land with. If you knew upfront exactly what your fuel burn would have been then you would have liked to depart EGCC with 8958kgs + 4178kgs reserves. This means you would have needed to buy 10670kgs of fuel at EGCC. For the return flight, again, assuming you knew upfront what fuel you would burn then you would have needed to depart LEBL with 7791kgs + 4178kgs reserves. Now, assuming that you had landed LEBL with the 4178kgs reserves intact then you would only need to buy your estimated enroute fuel for the return flight.
Exercise figures
fuel on a/c................... = 2466kgs
bought fuel.................. = 10670kgs
dep fuel ...................... = 13136kgs
fuel burn EGCC-LEBL.... = 8958kgs
fuel on arr ..... .............= 4178kgs
bought fuel LEBL .......... = 7791kgs
dep fuel LEBL .............. = 11969kgs
fuel burn LEBL-EGCC.... = 7791kgs
fuel remaining on a/c.... = 4178kgs
EGCC-LEBL
Income from tickets: PAX ( 132 ) x Ticketprice ( 129v$ ) 17028v$
Fuel cost: Fuel Price ( 1.14v$ ) x 1.234 x Fuel Bought ( 10670kg ) -15010v$
Crew & catering cost: -660v$
Cargo income: 0v$/100nm x Distance ( 746nm ) x Cargo ( 0kg ) 0v$
Bonus: 271v$
Pilot salary: Airline Income x Pilot salary percentage -244v$
Gross profit: 1385v$
x Multiplier ( 200 ) 277000v$
Flight now in profit
LEBL-EGCC
Income from tickets: PAX ( 132 ) x Ticketprice ( 129v$ ) 17028v$
Fuel cost: Fuel Price ( 1.5v$ ) x 1.234 x Fuel Bought ( 7791kg ) -14421v$
Crew & catering cost: -660v$
Cargo income: 0v$/100nm x Distance ( 746nm ) x Cargo ( 0kg ) 0v$
Bonus: 389v$
Pilot salary: Airline Income x Pilot salary percentage -350v$
Gross profit: 1986v$
x Multiplier ( 200 ) 397200v$
Reduced profit due to higher fuel cost
The impact of using the exercise figures are that you would need to buy more fuel at LEBL which is dearer than EGCC and although both flights are in profit the total income for both flights is less. This is a classic example of 'fuel tankering' at an airport where fuel is considerably cheaper than your next port of call.
Nigel's actual loss/profit for the flights were v$-640,200 outbound and v$1,621,000 for the return making an overall profit of v$980,000 which is good. Had he taken minimum fuels for each of the legs per the example above then he'd only have made an overall profit of v$674,200
I don't want the fuel economics to become a chore. Just a quick glance at the fuel prices will help you determine how you need to play the game. What we don't want to see is 'fuel tankering' at an airport that is dearer than your destination. Given the choice of filling up your car with fuel, you'd like to minimise your costs and fill up where the fuel is cheaper. Things work pretty similarly in the FlyNET world.
So, overall Nigel, WELL DONE!
Rgds
John