Which organization is typically responsible for airfield operations at O'Hare?

The Chicago Department of Aviation is the organization responsible for airfield operations at O'Hare International Airport. This department oversees the day-to-day management of the airport, ensuring the operational efficiency of the airfield, coordinating activities related to aircraft operations, runway management, and maintenance of the airfield infrastructure.

In the context of airport operations, this department is critical in maintaining safety and compliance with federal regulations, as they work closely with other agencies such as the Federal Aviation Administration. However, the FAA itself does not conduct airfield operations; rather, it establishes regulations and provides oversight for safety across all U.S. airports.

The Transportation Security Administration focuses primarily on security measures at airports rather than on airfield operations. Their responsibilities include passenger screening and ensuring the security of the airport environment.

Lastly, while the Chicago Police Department may play a role in law enforcement at the airport, their focus is not on airfield operations. Instead, they handle security incidents and public safety, which are separate from the daily management of aeronautical activities at the airport.

By understanding these distinctions, it's clear why the Chicago Department of Aviation is tasked with the responsibility for airfield operations at O'Hare.