Old Smokey
...my question then relates to tailwinds...I fly into Costa Rica,San Jose ..the data on the T/O performance enables me to go with up to a 15kt Tailwind...used to be 10kts,and of course we now take more of a weight penalty...are T/W,s calculated in the same manner as H/W,s?....and if not,how does the T/W component calculated affect FMGC speeds on the A320...we carry the paper versions,yet when I compare the #,s in the paper version as opposed to the FMGC #,s there are sometimes more than 5kts difference....PB