9.1.3.1. Wind data used in flight plans

In Australia, AvPlan EFB receives the information seen in GPWT charts, in a database format. The winds database package is downloaded in the background and applied to the flight plan automatically when planning below 14,000 feet AMSL. Where the flight is planned above 14,000 feet, AvPlan EFB moves seamlessly to the upper level global wind model.

For flights planned elsewhere, wind data are taken from the global aviation winds forecast model (WIFS). Wind data are extracted from this data set and applied to your flight plan. For the keen meteorology student, this is the WIFS website. (An account is required for access).

*The wind strength/direction for a planned leg is sampled from overhead the arrival waypoint for that leg, at the cruise/passing altitude set in the flight plan and expected time of arrival.

*If your planned cruise altitude sits in between levels found within the database (e.g. 4,500ft AMSL), AvPlan EFB performs a linear interpolation between the level below to the level above for both wind velocity and direction.