Cost index
Join Date: Nov 1999
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What would you like it to be?
There is no set number for a particular aircraft. The number is a variable input used by the FMC to factor an individual airlines trip operating costs and fuel costs in order to provide performance bias to arrive at what the operator is seeking for that trip. Usually this is minimum trip cost but it may be maximum range or some other variable. Each airline will have their own individual costs and priorities and the number used will reflect those requirements.
There is no set number for a particular aircraft. The number is a variable input used by the FMC to factor an individual airlines trip operating costs and fuel costs in order to provide performance bias to arrive at what the operator is seeking for that trip. Usually this is minimum trip cost but it may be maximum range or some other variable. Each airline will have their own individual costs and priorities and the number used will reflect those requirements.
Join Date: Mar 2009
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There is no fixed number. On long haul operations the cost index will vary on different routes depending on the cost of fuel at the various destinations. It will determine the cost effectiveness of tankering fuel or not.
Join Date: Dec 1999
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CJT, read what is being said - cost index varies enormously from company to company, I would say if you use one from a Middle Eastern co that has very low fuel costs they will have a high CI, one from a very cost conscious company will be very low, just pick any number really and you will probably find someone using it the only one that applies to YOU is the one YOUR company gives!
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We have what appears to be cost index numbers that are carefully calculated by the company. The flightplans also show as a comparison of what the difference in burn will be on the flight if a CI of 0 is used. The difference for long haul flights appears to be very small. I have a flight plan in hand with a burn of over 130T and the difference between our planned CI burn and a CI 0 burn is 83kg. Admittedly, it does vary but is usually less than 200 kg.
I suppose when multiplied by many flights, it does add up but it sure seems small on a flight like that.
I suppose when multiplied by many flights, it does add up but it sure seems small on a flight like that.
