Max fwd error 

0,76 kg/l
0,785 kg/l
0,83 kg/l
WEIGHT AND
BALANCE
INDEX
WEIGHT AND
BALANCE
C. BALANCE CHART DESIGN

On long range aircraft (A330/A340), wide-body aircraft (A300/A310) and single aisle aircraft equipped with ACTs the total fuel quantity reaches higher values and the fuel tanks may far from the Reference Chord (specially Trim Tank and ACTs). Consequently, a fuel density variation can imply a significant .index variation for a given weight value. That is why, fuel index tables are usually established for a discrete range of fuel densities. Actual density of the day can be an intermediate density and an interpolation will be required to get the fuel .index. To cover interpolation potential error, half of the maximum forward and aft index variation between two consecutive fuel densities has to be included into the fuel allowance.
. Ex : A330-200
WEIGHT (kg)  DENSITY (kg/l) 
0,760  0,765  0,770  0,775  0,780  0,785  0,790  0,795  0,800  0,805  0,810  0,815  0,820  0,825  0,830 
000  .2  .2  .2  .2  .2  .2  .2  .2  .2  .2  .2  .2  .2  .2  .2 
4000  .4  .4  .4  .4  .4  .4  .4  .4  .4  .4  .4  .4  .4  .4  .4 
6000  .6  .6  .6  .6  .6  .6  .6  .6  .6  .6  .6  .6  .6  .6  .6 
8000  .8  .8  .8  .8  .8  .8  .8  .8  .8  .8  .8  .8  .8  .8  .8 
10000  .8  .8  .8  .8  .8  .8  .8  .8  .8  .8  .8  .8  .8  .8  .8 
12000  .4  .4  .4  .4  .4  .4  .4  .4  .4  .4  .4  .4  .4  .4  .4 
14000  +1  +1  +1  +1  +1  +1  +1  +1  +1  +1  +1  +1  +1  +1  +1 
16000  +1  +1  +1  +2  +2  +2  +2  +2  +2  +2  +2  +2  +3  +3  +3 
18000  .1  .1  .1  +0  +0  +0  +0  +0  +0  +0  +0  +0  +1  +1  +1 
20000  .3  .3  .2  .2  .2  .2  .2  .2  .2  .2  .2  .2  .1  .1  .1 
22000  .5  .4  .4  .4  .4  .4  .4  .4  .4  .4  .4  .3  .3  .3  .3 
　
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本文鏈接地址：Getting to Grips with Aircraft Weight and Balance(72)