User manual

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In this case you are able to use the Inflight method by pressing the re-
spective button on the Ribbon. Complete the required data for Aircraft
Position, Altitude/FL (Flight Level), Destination, Zero Fuel Weight, Fuel
on Board and Aircraft Weight.
PFPX will automatically propose nearby diversion airfields. Press Apply
to continue your flight planning as usually.
Take-off and Landing Calculation
The Take-off and Landing Performance Calculation module requires a
licensed version of TOPCAT (Take-off and Landing Performance Tool).
Take-off and Landing performance is calculated based upon the current
airport weather, a specified runway and a set of environmental condi-
tions.