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Cost index flight planning

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Cost index flight planning

Old 7th Jun 2012, 21:14
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Join Date: May 2008
Location: UK
Posts: 67
Cost index flight planning

Boeing FPPM and Airbus FCOM only provide data for LRC and fixed-mach cruising. How is it possible to obtain fuel burn and cruising speeds for specific cost index values based on these LRC and fixed-mach tables?

Same question applies to climb and decent figures.

GSLOC is offline  
Old 7th Jun 2012, 21:19
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Join Date: May 2000
Location: Seattle
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Since Econ cruise is "adaptive" -- it changes speed/burn with change in wind -- it would require a specific flight planning program that has all those data programmed in.

Even airline Dispatchers can only get a fuel burn for a particular flight by plugging in all the variables, and then doing a "what if" scenario of changing variables.
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Old 7th Jun 2012, 21:34
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Join Date: Apr 2008
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GSLOC the data and the certified data for that matter is not contained in the AFM but in what is known as DPI Digital Perfomance Information.
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