Who should be immediately notified when there is a condition that creates a hazard or obstruction to aircraft or vehicle traffic in the AOA?

The correct choice is to notify Airfield Operations immediately when there is a condition that creates a hazard or obstruction to aircraft or vehicle traffic in the AOA (Air Operations Area). Airfield Operations is responsible for maintaining the safety and efficiency of all traffic on the airfield, which includes oversight of runway conditions, taxiways, and other critical areas where aircraft and vehicles operate. They are equipped to assess the hazard, coordinate with other personnel, and take appropriate actions to minimize risks.

Timely communication with Airfield Operations ensures that they can respond effectively to the situation, whether that involves alerting relevant staff, putting safety measures into place, or informing pilots and drivers about the hazard. This role is central to airfield safety management and is part of standard procedures for reporting hazards.