Which department must be notified immediately in the event of an accident involving an aircraft?

In the event of an accident involving an aircraft, it is crucial to notify Airfield Operations and Airport Police immediately. This department is specifically tasked with ensuring safety and security on the airport premises, and they have the authority and training to handle emergencies involving aircraft.

Airfield Operations plays a vital role in assessing the situation, coordinating with necessary emergency services, and managing the flow of information among various stakeholders, including air traffic control, emergency responders, and airport management. Meanwhile, the Airport Police are responsible for maintaining order and providing security during incidents. Their prompt response is crucial for the safety and coordination of all involved in an aircraft accident.

While other departments, such as the Los Angeles Fire Department, may need to be notified for firefighting and rescue operations, it is Airfield Operations and Airport Police who must be informed immediately to initiate an organized response to the incident.