Can someone explain which winds are used and where on the 737? I understand the wind entered in the perf page is used in the climb and the cruise? If no wind is entered in the descent forecast page then will it work out on zero wind?
I have also heard that on the active leg i.e. the White waypoint rather than magenta, then the FMC will use the actual wind - can someone confirm if/when this is the case please?
Many thanks in advance