What are the functions of the Ground Proximity Warning System (GPWS)?

The Ground Proximity Warning System (GPWS) is specifically designed to enhance flight safety by providing alerts to pilots regarding potential ground conflicts. Its primary functions revolve around terrain awareness and ensuring that aircraft maintain a safe altitude above the terrain during flight.

When considering terrain clearance floor, the GPWS uses data from its sensors to inform pilots if they are approaching the ground or terrain at a dangerous altitude, thereby aiding in avoiding unintentional ground impacts. The system also helps in generating various alerts that notify pilots of the proximity to the terrain, thereby increasing situational awareness and allowing for timely corrective actions.

This focus on terrain clearance and awareness is crucial for preventing accidents and ensuring safe flight operations, particularly during takeoff and landing phases where proximity to the ground is vital. Thus, this justification firmly supports the choice that emphasizes the critical functions of terrain awareness and clearance in the GPWS.