Wind component effect on FMS calculations. in Manual Flight, Autoflight and Flight Management Posted July 20 On 7/15/2021 at 11:17 AM, Danny Vincken said: It's about the calculations, the fms does not calculate an new fuel prediction on destination regardless of the windfactor that is entered in the fms. Exactly. On 7/14/2021 at 6:30 PM, Mathijs Kok said: And are you the wind actually is changed? Here, the problem isn't about the "live" wind component, but the "computed" one based on data inserted in the FMS.