Winds on the CDU are different to what is displayed on the ND and in the Shift + Z info. Possible Mag Var difference, is this intentional? Many Thanks Craig Phillips

Bump!!

FMS wind is corrected for mag var using its internal database; the wind on the ND is the IRS wind which is a TRUE heading (IRS only works on true headings, and has no mag var database to correct it). Go to somewhere the mag var is great, such as in the US. You should find a split of around 15 degrees on the east coast! Best regards,Robin.

Take a look at the FCOM's as well.