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Difference between FU and FQI

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Difference between FU and FQI

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Old 18th April 2009 | 12:43
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From: Europe
Difference between FU and FQI

I guys,

For an A320 the manual specifies that Total Fuel quantity (measured in the thanks) has an acuracy of 1%. Fuel used has indicated in engine instruments has an accuracy of 1 to 2%. How come after a flight (an average of 2 hrs and 5 T consumption) there is always an average of 100 to 200 Kgs diference. I always include the estimated APU consumption.

Any toughts?
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Old 18th April 2009 | 12:57
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From: Choroni, sometimes
Well if the consumption was 5t, than block was let's say 8.000 kg.

1% tolerance gives you maybe only 7.820kg actual, right?

5.000kg consumption, considering 1% tolerance may be actualy 5.050kg, right?

So at the end of the flight 130kg are "missing"

ciao
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