Fuel Requirements - In Practice
Some points to consider:
Flight plan fuel required should be added to
* Actual taxy fuel predicted from your experience,not a "company standard" figure.
* Unusable fuel
* Dip stick/ gauge allowable error.
* You only sweat a low fuel state once
and
bear in mind that in the scramble for the alternate when a
busy destination closes you never get the flight level your diversion fuel was based on.