What effect does overriding sensitivity during a GPS approach have?

Overriding sensitivity during a GPS approach can indeed cancel the approach mode annunciation. This means that the system no longer recognizes that it is in the approach mode, which is critical for properly managing the aircraft's flight path during an approach. When the annunciation is canceled, the autopilot may not correctly follow the lateral and vertical guidance that the GPS system provides, potentially leading to navigational errors or loss of situational awareness for the pilot. Thus, maintaining the proper sensitivity settings is vital for ensuring that the aircraft receives accurate guidance throughout the approach phase.

Other options, such as prolonging the approach time or changing the flight path, do not accurately reflect the primary impact of overriding sensitivity on the GPS functionality. Similarly, while navigational accuracy is important, overriding sensitivity instead compromises the system's intended performance rather than enhancing it.