Hi,for a flightplanning project I am looking for formulas to calculate wind components, but I searched within this and other forums but no success.I found several by searching the internet but all seem to be not correct.To start with wind correction angle WCA > I found WW * WS / TAS whereby WW is the angle between MAG TRACK and WIND DIRECTION and WS is the WIND SPEED - I checked this formula with the results of a AS nav log but they differ a lot - an example :between 61N20W and 62N30W MC is 305 wind was 252/127 and the WCA was - 9 with my calculation I came out with - 14 !!Same with the wind component : my formula I found in the net calls forWS * COS ((( WD - 180 ) - MC + (WCA) )* pi/180 )With the same figures from above the AS nav log calculates for WC of minus 110 - my calc only for minus 49 !Any help highly appreciated and happy holidays

Hi Karl,Thanks for writing.Part of this is because we use True Direction and the other part is that we use averages in the flight log. There as a post about this a real long time ago!Happy Holidays,Jimhttp://www.hifisim.com/Active Sky V6 Development Team Active Sky V6 Proud SupporterHiFi Beta TeamRadar Contact Supporter: http://www.jdtllc.com/AirSource Member: http://www.air-source.us/FSEconomy Member:http://www.fseconomy.com/