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PMDG Fuel cost Index

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EHM-1343 Jonathan:

--- Quote ---
from the PMDG Manual

Insert the value 100 into the scratchpad and click on LSK6L(This value represents the cost index and is probably way too high for a real aviation company, but for now it will do)

--- End quote ---


This is from the text about the introductory flight....can anybody tell me:
 
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[*]What a real airline would use on this value?
[*]Does this have any effect on cruise speeds, optimum flight levels, clim rates and so on....?
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thanks in advance

EHM-1281 Cyriel:
a quick look on the internet gave me this
http://www.iata.org/NR/ContentConnector/CS2000/Siteinterface/sites/whatwedo/file/Airbus_Cost_Index_Material.pdf

Although it is for airbus the idea will be the same. All I know myself about it that it is highly complicated and depends on a number of factors including the age of the engines etc. I always put 200 in there.

EHM-1001 Robert:
Cost index is a realtive number for the FMC which tells how much fuel you want to burn, how economically you want to fly. 100 is the maximum, which means you fly full throttle, at all cost! 0 is the minimum, which means you fly very smoothly. The FMC calculates the optimal flight level, optimal climbing and descending rates, optimal takeoff power... everything that is related to fuel burn. The lowest the cost index, the cheapest the flight for the airline ;)

I have red it in the FMC manual...somewhere.

EHM-1358 Tim:
For Boeings I normally use 40-50.

EHM-1343 Jonathan:

--- Quote ---Originally posted by SirRoberto
The lowest the cost index, the cheapest the flight for the airline ;)
--- End quote ---


Hmmm...we'll have it on about 50 then...best of both, bit of speed, and economy.

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