What is the function of the ground evacuation bell?

The ground evacuation bell serves a crucial function in ensuring the safety and efficiency of evacuation procedures during emergencies. When activated, it indicates to both crew and passengers that an emergency evacuation is required. This signal prompts immediate and organized action for evacuating the aircraft, allowing clear communication of the seriousness of the situation.

In contrast, the other functions mentioned do not pertain to the purpose of the ground evacuation bell. For instance, signaling readiness for takeoff, alerting crew of maintenance issues, or notifying of landing procedures serve entirely different objectives related to aircraft operations and safety, but do not directly involve emergency evacuation responses.