How are danger areas predominantly activated?

Danger areas are predominantly activated by NOTAM (Notice to Airmen). A NOTAM is a communication tool that provides essential information to pilots about specific conditions that could affect their flight, including the activation and status of danger areas. When a danger area is activated, it signifies that there may be activities occurring that pose a hazard to air navigation, such as military exercises or other potentially dangerous operations.

Pilots rely on NOTAMs to stay informed about the status of these areas, ensuring they can take necessary precautions in their flight planning and execution. NOTAMs are regularly updated and provide real-time information that can change based on operational requirements, thereby making them the most effective and reliable method for notifying pilots about danger area activations.

While pilot notification, weather conditions, and aerial surveys can play roles in flight safety and management, they do not serve as the primary means for officially activating danger areas like NOTAMs do.