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The main goal of the sidestick position indications is to keep the PNF aware of the inputs made by the PF when there is no aircraft response upon these inputs, which is the case on ground only. This indication is for PNF awareness in general.
For example, during flight control checks, the crew has to verify that the flight control surfaces go to the full deflection and in the correct direction (PRO-NOR-SOP-10-A). The full deflection is to be checked on the ECAM F/CTL Page. To check that the deflection is in the correct direction, the PF will compare the sense of his/her action on the side stick with the callout made by the PNF. The PNF primary task is to check the surfaces deflection on the ECAM F/CTL page and to announce its direction. However, the PNF may additionally compare the direction of the displacement of the deflection of the surfaces on the F/CTL page with the direction of the side stick symbol on the PFD.
The sidestick position on the PFD may also be used by the PNF (not the PF) during initial takeoff roll to check that the PF is making an appropriate control input. Please note that this indication must not be used by the PF during takeoff rotation.
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