guys i need help regaring the Fuel Pred page in the MCDU of an Airbus A320
the page says
at [5L] it says FINAL/TIME
which says that the pilot can modify this field,and it is the fuel you need overhead the Final destination.and holding at 1500 greendot speed
suppose you need 0045 mins of holding over ur destination does that mean that you simply punch in /0045 and punch in th 5L line select key.and the comp will tell you the fuel.
and at [6L] EXTRA/TIME
it says that the same description as for FINAL/Time whats the difference between the two.
can any one please bother to clear my doubt.
it would be very helpfull to me.

