What happens when overriding an automatically selected sensitivity while flying a GPS approach procedure?

When overriding an automatically selected sensitivity while flying a GPS approach procedure, the system effectively cancels the approach mode annunciation. The approach mode is designed to aid pilots in executing precise navigational tasks during critical phases, such as descent and approach. If the sensitivity is overridden, it indicates that the pilot is manually adjusting the system's responsiveness to navigation inputs, which disrupts the automated feedback loop that informs the system of its mode.

This action signifies a transition away from the normal operational parameters established by the autopilot's GPS approach logic, thus negating the automatic annunciation that indicates the mode is still engaged and functioning correctly. It is important for pilots to recognize how changes in the system's sensitivity can impact their approach and to ensure that they understand the implications of overriding such settings during flight operations.